Finding the Fourth Proportional to 20,581,178.61, 30,875,124.99 and 8,447,385.49
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Solution
The fourth proportional to 20,581,178.61, 30,875,124.99 and 8,447,385.49 is: 12,672,456.12
Step by Step Solution
- Step 1: Write the proportion equation
20,581,178.61 : 30,875,124.99 = 8,447,385.49 : x - Step 2: Convert to fraction form
20,581,178.61/30,875,124.99 = 8,447,385.49/x - Step 3: Cross multiply
20,581,178.61x = 30,875,124.99 × 8,447,385.49 - Step 4: Simplify right side
20,581,178.61x = 260,814,082,842,462.38 - Step 5: Solve for x
x = 260,814,082,842,462.38/20,581,178.61 - Step 6: Final answer
x = 12,672,456.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.