Finding the Fourth Proportional to 10,811,965.20, 14,920,517.79 and 5,917,184.43
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Solution
The fourth proportional to 10,811,965.20, 14,920,517.79 and 5,917,184.43 is: 8,165,717.70
Step by Step Solution
- Step 1: Write the proportion equation
10,811,965.20 : 14,920,517.79 = 5,917,184.43 : x - Step 2: Convert to fraction form
10,811,965.20/14,920,517.79 = 5,917,184.43/x - Step 3: Cross multiply
10,811,965.20x = 14,920,517.79 × 5,917,184.43 - Step 4: Simplify right side
10,811,965.20x = 88,287,455,554,526 - Step 5: Solve for x
x = 88,287,455,554,526/10,811,965.20 - Step 6: Final answer
x = 8,165,717.70
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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.