21 is what percent of 1863 - 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 1863 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 1863, so we can write it down as 100%=1863.
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%=1863
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%=1863/21
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 1863

100%/x%=1863/21
(100/x)*x=(1863/21)*x       - we multiply both sides of the equation by x
100=88.714285714286*x       - we divide both sides of the equation by (88.714285714286) to get x
100/88.714285714286=x
1.1272141706924=x
x=1.1272141706924

now we have:
21 is 1.1272141706924% of 1863