Home / 20,121.38-30,159.48-9,452.96

Finding the Fourth Proportional to 20,121.38, 30,159.48 and 9,452.96

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Solution

The fourth proportional to 20,121.38, 30,159.48 and 9,452.96 is: 14,168.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.38 : 30,159.48 = 9,452.96 : x
  2. Step 2: Convert to fraction form
    20,121.38/30,159.48 = 9,452.96/x
  3. Step 3: Cross multiply
    20,121.38x = 30,159.48 × 9,452.96
  4. Step 4: Simplify right side
    20,121.38x = 285,096,358.06
  5. Step 5: Solve for x
    x = 285,096,358.06/20,121.38
  6. Step 6: Final answer
    x = 14,168.83

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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.