how do i find the unknown nunber in the proportion?

Question

19.98/3.18=X/5.3

Answer 1

19.98/3=x/5.3 You cross mulitiply the 19.98 x5.3=105.894 then divide by the other in this case the 3 = 35.298 or 35.30

 

What ever  problem you have like this with porportion, you can use the same formula cross multiply then divide by the number either above or below the unknown number.