Finding the Fourth Proportional to 11,389,711.66, 15,717,791.93 and 6,429,197.13
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Solution
The fourth proportional to 11,389,711.66, 15,717,791.93 and 6,429,197.13 is: 8,872,286.31
Step by Step Solution
- Step 1: Write the proportion equation
11,389,711.66 : 15,717,791.93 = 6,429,197.13 : x - Step 2: Convert to fraction form
11,389,711.66/15,717,791.93 = 6,429,197.13/x - Step 3: Cross multiply
11,389,711.66x = 15,717,791.93 × 6,429,197.13 - Step 4: Simplify right side
11,389,711.66x = 101,052,782,769,135.16 - Step 5: Solve for x
x = 101,052,782,769,135.16/11,389,711.66 - Step 6: Final answer
x = 8,872,286.31
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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.