21.31 is what percent of 304.64 - 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 304.64 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 304.64, so we can write it down as 100%=304.64.
4. We know, that x% equals 21.31 of the output value, so we can write it down as x%=21.31.
5. Now we have two simple equations:
1) 100%=304.64
2) x%=21.31
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%=304.64/21.31
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 21.31 is what percent of 304.64

100%/x%=304.64/21.31
(100/x)*x=(304.64/21.31)*x       - we multiply both sides of the equation by x
100=14.295635851713*x       - we divide both sides of the equation by (14.295635851713) to get x
100/14.295635851713=x
6.9951418067227=x
x=6.9951418067227

now we have:
21.31 is 6.9951418067227% of 304.64