Finding the Fourth Proportional to 20,534,704.74, 28,337,900.76 and 11,242,876.95
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Solution
The fourth proportional to 20,534,704.74, 28,337,900.76 and 11,242,876.95 is: 15,515,174.69
Step by Step Solution
- Step 1: Write the proportion equation
20,534,704.74 : 28,337,900.76 = 11,242,876.95 : x - Step 2: Convert to fraction form
20,534,704.74/28,337,900.76 = 11,242,876.95/x - Step 3: Cross multiply
20,534,704.74x = 28,337,900.76 × 11,242,876.95 - Step 4: Simplify right side
20,534,704.74x = 318,599,531,265,991.50 - Step 5: Solve for x
x = 318,599,531,265,991.50/20,534,704.74 - Step 6: Final answer
x = 15,515,174.69
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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.