Home / 18,680.89-25,781.17-10,724.65

Finding the Fourth Proportional to 18,680.89, 25,781.17 and 10,724.65

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Solution

The fourth proportional to 18,680.89, 25,781.17 and 10,724.65 is: 14,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.89 : 25,781.17 = 10,724.65 : x
  2. Step 2: Convert to fraction form
    18,680.89/25,781.17 = 10,724.65/x
  3. Step 3: Cross multiply
    18,680.89x = 25,781.17 × 10,724.65
  4. Step 4: Simplify right side
    18,680.89x = 276,493,842.31
  5. Step 5: Solve for x
    x = 276,493,842.31/18,680.89
  6. Step 6: Final answer
    x = 14,800.90

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1.5x scale

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.