Finding the Fourth Proportional to 20,723,653.92, 28,603,768.68 and 14,119,171.68
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Solution
The fourth proportional to 20,723,653.92, 28,603,768.68 and 14,119,171.68 is: 19,487,949.48
Step by Step Solution
- Step 1: Write the proportion equation
20,723,653.92 : 28,603,768.68 = 14,119,171.68 : x - Step 2: Convert to fraction form
20,723,653.92/28,603,768.68 = 14,119,171.68/x - Step 3: Cross multiply
20,723,653.92x = 28,603,768.68 × 14,119,171.68 - Step 4: Simplify right side
20,723,653.92x = 403,861,520,687,927 - Step 5: Solve for x
x = 403,861,520,687,927/20,723,653.92 - Step 6: Final answer
x = 19,487,949.48
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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.