Cu cât vin mai mulți, cu atât donația este mai mare.

It is a very common Romanian structure used to connect two related changes. It corresponds to English patterns like the more..., the more... or the more..., the bigger....

In this sentence, the first part gives one changing factor, and the second part gives the matching result:

• Cu cât vin mai mulți = as more people come
• cu atât donația este mai mare = the donation is larger

So the whole structure shows a proportional relationship.

In this pattern:

• cât points to degree or quantity
• atât points back to that same degree

Together, cu cât ... cu atât works as a fixed pair. You do not usually translate each word separately in a word-for-word way. It is better to learn the whole pattern as one unit.

A good shortcut is:

• cu cât = the more / the less
• cu atât = the more / the less, in response to the first clause

Because Romanian forms each comparative separately.

Here you have:

• mai mulți = more
• mai mare = bigger / larger

The outer structure cu cât ... cu atât does not replace the comparative marker mai. It only links the two clauses. So each adjective or quantifier still needs its own mai.

Because Romanian can leave the noun understood when it is obvious from context.

So mai mulți here means more people. The noun is not stated, but it is easy to infer something like oameni.

This is very common in Romanian, just as English can sometimes say more are coming without repeating people.

Because the implied noun is understood as something like oameni, which is grammatically masculine plural.

So:

• mai mulți = more people, more men, or more people in a mixed/unspecified group

Romanian normally uses the masculine plural form for mixed groups or when gender is not specified.

If the noun were explicitly feminine, you would use multe instead:

• mai multe femei = more women
• mai multe fete = more girls

Because the sentence expresses a general rule or tendency, not one single event happening at one exact moment.

Romanian often uses the present tense for:

• general truths
• habitual situations
• cause-and-effect relationships

So vin and este here mean something like whenever this happens, this is the result.

Romanian word order is fairly flexible, but vin mai mulți sounds very natural and neutral here.

Both orders can be possible, but they can sound slightly different in emphasis:

• vin mai mulți = neutral, flowing order
• mai mulți vin = stronger focus on more people

So the version in your sentence is simply the most natural standard wording for this kind of statement.

Because donația is the definite form, meaning the donation.

In Romanian, the definite article is attached to the end of the noun:

• donație = donation
• donația = the donation

Here the sentence is talking about the donation amount as a known or relevant quantity in the situation, not just any donation. That is why the definite form sounds natural.

Using o donație would mean a donation, which would feel less specific and less natural in this type of general statement.

Not necessarily. Mare can refer to physical size, but it can also refer to amount, degree, importance, or scale.

In this sentence, donația este mai mare means the donation is larger in amount, not physically bigger.

So mai mare often corresponds to English larger or greater, depending on context.

Yes. That version is also correct.

Romanian allows some flexibility in word order, especially in structures like this. Both of these are natural:

• Cu cât vin mai mulți, cu atât donația este mai mare
• Cu cât mai mulți vin, cu atât mai mare este donația

The difference is mainly one of rhythm and emphasis, not basic meaning.

Yes, normally it is.

The comma separates the two parts of the correlative structure:

• the cu cât clause
• the cu atât clause

So standard Romanian punctuation would write:

• Cu cât vin mai mulți, cu atât donația este mai mare.

This comma helps show the relationship clearly and makes the sentence easier to read.