Finding the Fourth Proportional to 15,516,774.20, 21,411,615.54 and 8,641,895.96
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Solution
The fourth proportional to 15,516,774.20, 21,411,615.54 and 8,641,895.96 is: 11,924,962.72
Step by Step Solution
- Step 1: Write the proportion equation
15,516,774.20 : 21,411,615.54 = 8,641,895.96 : x - Step 2: Convert to fraction form
15,516,774.20/21,411,615.54 = 8,641,895.96/x - Step 3: Cross multiply
15,516,774.20x = 21,411,615.54 × 8,641,895.96 - Step 4: Simplify right side
15,516,774.20x = 185,036,953,832,199.22 - Step 5: Solve for x
x = 185,036,953,832,199.22/15,516,774.20 - Step 6: Final answer
x = 11,924,962.72
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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.