Finding the Fourth Proportional to 21,580,347.49, 29,780,531.98 and 11,790,581.47
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Solution
The fourth proportional to 21,580,347.49, 29,780,531.98 and 11,790,581.47 is: 16,270,812.54
Step by Step Solution
- Step 1: Write the proportion equation
21,580,347.49 : 29,780,531.98 = 11,790,581.47 : x - Step 2: Convert to fraction form
21,580,347.49/29,780,531.98 = 11,790,581.47/x - Step 3: Cross multiply
21,580,347.49x = 29,780,531.98 × 11,790,581.47 - Step 4: Simplify right side
21,580,347.49x = 351,129,788,530,130.44 - Step 5: Solve for x
x = 351,129,788,530,130.44/21,580,347.49 - Step 6: Final answer
x = 16,270,812.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.