Finding the Fourth Proportional to 20,797,213.29, 28,690,484.70 and 13,457,416.42
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Solution
The fourth proportional to 20,797,213.29, 28,690,484.70 and 13,457,416.42 is: 18,564,977.65
Step by Step Solution
- Step 1: Write the proportion equation
20,797,213.29 : 28,690,484.70 = 13,457,416.42 : x - Step 2: Convert to fraction form
20,797,213.29/28,690,484.70 = 13,457,416.42/x - Step 3: Cross multiply
20,797,213.29x = 28,690,484.70 × 13,457,416.42 - Step 4: Simplify right side
20,797,213.29x = 386,099,799,899,538.75 - Step 5: Solve for x
x = 386,099,799,899,538.75/20,797,213.29 - Step 6: Final answer
x = 18,564,977.65
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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.