Finding the Fourth Proportional to 10,505,717.20, 15,743,813.55 and 8,350,428.70
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Solution
The fourth proportional to 10,505,717.20, 15,743,813.55 and 8,350,428.70 is: 12,513,909.33
Step by Step Solution
- Step 1: Write the proportion equation
10,505,717.20 : 15,743,813.55 = 8,350,428.70 : x - Step 2: Convert to fraction form
10,505,717.20/15,743,813.55 = 8,350,428.70/x - Step 3: Cross multiply
10,505,717.20x = 15,743,813.55 × 8,350,428.70 - Step 4: Simplify right side
10,505,717.20x = 131,467,592,515,368.89 - Step 5: Solve for x
x = 131,467,592,515,368.89/10,505,717.20 - Step 6: Final answer
x = 12,513,909.33
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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.