Finding the Fourth Proportional to 13,565,615.99, 18,720,545.78 and 7,454,438.15
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Solution
The fourth proportional to 13,565,615.99, 18,720,545.78 and 7,454,438.15 is: 10,287,122.29
Step by Step Solution
- Step 1: Write the proportion equation
13,565,615.99 : 18,720,545.78 = 7,454,438.15 : x - Step 2: Convert to fraction form
13,565,615.99/18,720,545.78 = 7,454,438.15/x - Step 3: Cross multiply
13,565,615.99x = 18,720,545.78 × 7,454,438.15 - Step 4: Simplify right side
13,565,615.99x = 139,551,150,520,378.56 - Step 5: Solve for x
x = 139,551,150,520,378.56/13,565,615.99 - Step 6: Final answer
x = 10,287,122.29
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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.