4/18 as a percentage is 22.22%. This is the rounded value you get when you compare the part (4) to the whole (18) in terms of hundredths. It’s a handy way to see how big the fraction is without dealing with a weird denominator.
The fraction 4/18 can also be simplified to 2/9, which still represents the same portion of a whole. Whether you write it as 2/9 or 4/18, the percentage stays the same at 22.22%.
In everyday situations, you might use this number to describe a small share of a group, like 22.22% of a class of 18 students being 4 students. It’s a quick way to communicate size without needing to count each individual.
