Finding the Fourth Proportional to 21,220,066.13, 29,283,691.56 and 11,562,274.13
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Solution
The fourth proportional to 21,220,066.13, 29,283,691.56 and 11,562,274.13 is: 15,955,938.46
Step by Step Solution
- Step 1: Write the proportion equation
21,220,066.13 : 29,283,691.56 = 11,562,274.13 : x - Step 2: Convert to fraction form
21,220,066.13/29,283,691.56 = 11,562,274.13/x - Step 3: Cross multiply
21,220,066.13x = 29,283,691.56 × 11,562,274.13 - Step 4: Simplify right side
21,220,066.13x = 338,586,069,165,310.31 - Step 5: Solve for x
x = 338,586,069,165,310.31/21,220,066.13 - Step 6: Final answer
x = 15,955,938.46
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1.5x scale
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.