Finding the Fourth Proportional to 11,355,909.53, 15,671,218.79 and 6,461,131.52
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Solution
The fourth proportional to 11,355,909.53, 15,671,218.79 and 6,461,131.52 is: 8,916,397.70
Step by Step Solution
- Step 1: Write the proportion equation
11,355,909.53 : 15,671,218.79 = 6,461,131.52 : x - Step 2: Convert to fraction form
11,355,909.53/15,671,218.79 = 6,461,131.52/x - Step 3: Cross multiply
11,355,909.53x = 15,671,218.79 × 6,461,131.52 - Step 4: Simplify right side
11,355,909.53x = 101,253,805,618,682 - Step 5: Solve for x
x = 101,253,805,618,682/11,355,909.53 - Step 6: Final answer
x = 8,916,397.70
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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.