Finding the Fourth Proportional to 20,592,916.48, 28,418,229.12 and 11,425,537.60
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Solution
The fourth proportional to 20,592,916.48, 28,418,229.12 and 11,425,537.60 is: 15,767,244.32
Step by Step Solution
- Step 1: Write the proportion equation
20,592,916.48 : 28,418,229.12 = 11,425,537.60 : x - Step 2: Convert to fraction form
20,592,916.48/28,418,229.12 = 11,425,537.60/x - Step 3: Cross multiply
20,592,916.48x = 28,418,229.12 × 11,425,537.60 - Step 4: Simplify right side
20,592,916.48x = 324,693,545,335,974.94 - Step 5: Solve for x
x = 324,693,545,335,974.94/20,592,916.48 - Step 6: Final answer
x = 15,767,244.32
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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.