Finding the Fourth Proportional to 12,394,517.70, 18,573,624.45 and 11,115,122.70
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Solution
The fourth proportional to 12,394,517.70, 18,573,624.45 and 11,115,122.70 is: 16,656,405.66
Step by Step Solution
- Step 1: Write the proportion equation
12,394,517.70 : 18,573,624.45 = 11,115,122.70 : x - Step 2: Convert to fraction form
12,394,517.70/18,573,624.45 = 11,115,122.70/x - Step 3: Cross multiply
12,394,517.70x = 18,573,624.45 × 11,115,122.70 - Step 4: Simplify right side
12,394,517.70x = 206,448,114,745,470 - Step 5: Solve for x
x = 206,448,114,745,470/12,394,517.70 - Step 6: Final answer
x = 16,656,405.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.