Finding the Fourth Proportional to 18,944,117.20, 28,419,862.20 and 8,161,397.20
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Solution
The fourth proportional to 18,944,117.20, 28,419,862.20 and 8,161,397.20 is: 12,243,683.95
Step by Step Solution
- Step 1: Write the proportion equation
18,944,117.20 : 28,419,862.20 = 8,161,397.20 : x - Step 2: Convert to fraction form
18,944,117.20/28,419,862.20 = 8,161,397.20/x - Step 3: Cross multiply
18,944,117.20x = 28,419,862.20 × 8,161,397.20 - Step 4: Simplify right side
18,944,117.20x = 231,945,783,783,465.84 - Step 5: Solve for x
x = 231,945,783,783,465.84/18,944,117.20 - Step 6: Final answer
x = 12,243,683.95
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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.