Finding the Fourth Proportional to 20,385,694.99, 28,132,263.66 and 11,218,337.74
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Solution
The fourth proportional to 20,385,694.99, 28,132,263.66 and 11,218,337.74 is: 15,481,308.60
Step by Step Solution
- Step 1: Write the proportion equation
20,385,694.99 : 28,132,263.66 = 11,218,337.74 : x - Step 2: Convert to fraction form
20,385,694.99/28,132,263.66 = 11,218,337.74/x - Step 3: Cross multiply
20,385,694.99x = 28,132,263.66 × 11,218,337.74 - Step 4: Simplify right side
20,385,694.99x = 315,597,235,128,608.56 - Step 5: Solve for x
x = 315,597,235,128,608.56/20,385,694.99 - Step 6: Final answer
x = 15,481,308.60
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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.