Finding the Fourth Proportional to 15,040,868.25, 20,756,649.69 and 8,165,350.29
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Solution
The fourth proportional to 15,040,868.25, 20,756,649.69 and 8,165,350.29 is: 11,268,319.94
Step by Step Solution
- Step 1: Write the proportion equation
15,040,868.25 : 20,756,649.69 = 8,165,350.29 : x - Step 2: Convert to fraction form
15,040,868.25/20,756,649.69 = 8,165,350.29/x - Step 3: Cross multiply
15,040,868.25x = 20,756,649.69 × 8,165,350.29 - Step 4: Simplify right side
15,040,868.25x = 169,485,315,565,669.91 - Step 5: Solve for x
x = 169,485,315,565,669.91/15,040,868.25 - Step 6: Final answer
x = 11,268,319.94
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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.