Finding the Fourth Proportional to 20,502,369.92, 28,293,861.12 and 11,335,604.48
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Solution
The fourth proportional to 20,502,369.92, 28,293,861.12 and 11,335,604.48 is: 15,643,460.74
Step by Step Solution
- Step 1: Write the proportion equation
20,502,369.92 : 28,293,861.12 = 11,335,604.48 : x - Step 2: Convert to fraction form
20,502,369.92/28,293,861.12 = 11,335,604.48/x - Step 3: Cross multiply
20,502,369.92x = 28,293,861.12 × 11,335,604.48 - Step 4: Simplify right side
20,502,369.92x = 320,728,018,868,369.81 - Step 5: Solve for x
x = 320,728,018,868,369.81/20,502,369.92 - Step 6: Final answer
x = 15,643,460.74
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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.