Finding the Fourth Proportional to 20,386,063.36, 28,132,771.52 and 11,218,706.11
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Solution
The fourth proportional to 20,386,063.36, 28,132,771.52 and 11,218,706.11 is: 15,481,816.67
Step by Step Solution
- Step 1: Write the proportion equation
20,386,063.36 : 28,132,771.52 = 11,218,706.11 : x - Step 2: Convert to fraction form
20,386,063.36/28,132,771.52 = 11,218,706.11/x - Step 3: Cross multiply
20,386,063.36x = 28,132,771.52 × 11,218,706.11 - Step 4: Simplify right side
20,386,063.36x = 315,613,295,545,900.62 - Step 5: Solve for x
x = 315,613,295,545,900.62/20,386,063.36 - Step 6: Final answer
x = 15,481,816.67
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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.