Finding the Fourth Proportional to 20,791,622.38, 28,680,919.68 and 12,088,832.95
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Solution
The fourth proportional to 20,791,622.38, 28,680,919.68 and 12,088,832.95 is: 16,675,891.88
Step by Step Solution
- Step 1: Write the proportion equation
20,791,622.38 : 28,680,919.68 = 12,088,832.95 : x - Step 2: Convert to fraction form
20,791,622.38/28,680,919.68 = 12,088,832.95/x - Step 3: Cross multiply
20,791,622.38x = 28,680,919.68 × 12,088,832.95 - Step 4: Simplify right side
20,791,622.38x = 346,718,846,863,887.44 - Step 5: Solve for x
x = 346,718,846,863,887.44/20,791,622.38 - Step 6: Final answer
x = 16,675,891.88
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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.