Home / 20,105.13-30,176.30-10,251.75

Finding the Fourth Proportional to 20,105.13, 30,176.30 and 10,251.75

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Solution

The fourth proportional to 20,105.13, 30,176.30 and 10,251.75 is: 15,387.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.13 : 30,176.30 = 10,251.75 : x
  2. Step 2: Convert to fraction form
    20,105.13/30,176.30 = 10,251.75/x
  3. Step 3: Cross multiply
    20,105.13x = 30,176.30 × 10,251.75
  4. Step 4: Simplify right side
    20,105.13x = 309,359,883.53
  5. Step 5: Solve for x
    x = 309,359,883.53/20,105.13
  6. Step 6: Final answer
    x = 15,387.11

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1.5x scale

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.