17.43 is what percent of 21.45 - 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 21.45 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 21.45, so we can write it down as 100%=21.45.
4. We know, that x% equals 17.43 of the output value, so we can write it down as x%=17.43.
5. Now we have two simple equations:
1) 100%=21.45
2) x%=17.43
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%=21.45/17.43
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 17.43 is what percent of 21.45

100%/x%=21.45/17.43
(100/x)*x=(21.45/17.43)*x       - we multiply both sides of the equation by x
100=1.2306368330465*x       - we divide both sides of the equation by (1.2306368330465) to get x
100/1.2306368330465=x
81.258741258741=x
x=81.258741258741

now we have:
17.43 is 81.258741258741% of 21.45