21 is what percent of 518133 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 518133 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 518133, so we can write it down as 100%=518133.
4. We know, that x% equals 21 of the output value, so we can write it down as x%=21.
5. Now we have two simple equations:
1) 100%=518133
2) x%=21
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=518133/21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 21 is what percent of 518133

100%/x%=518133/21
(100/x)*x=(518133/21)*x       - we multiply both sides of the equation by x
100=24673*x       - we divide both sides of the equation by (24673) to get x
100/24673=x
0.0040530134154744=x
x=0.0040530134154744

now we have:
21 is 0.0040530134154744% of 518133