Home / 18,711,240.80-28,066,861.20-13,672,392.80

Finding the Fourth Proportional to 18,711,240.80, 28,066,861.20 and 13,672,392.80

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Solution

The fourth proportional to 18,711,240.80, 28,066,861.20 and 13,672,392.80 is: 20,508,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,240.80 : 28,066,861.20 = 13,672,392.80 : x
  2. Step 2: Convert to fraction form
    18,711,240.80/28,066,861.20 = 13,672,392.80/x
  3. Step 3: Cross multiply
    18,711,240.80x = 28,066,861.20 × 13,672,392.80
  4. Step 4: Simplify right side
    18,711,240.80x = 383,741,150,989,479.38
  5. Step 5: Solve for x
    x = 383,741,150,989,479.38/18,711,240.80
  6. Step 6: Final answer
    x = 20,508,589.20

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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.