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Finding the Fourth Proportional to 17,942.13, 26,920.03 and 8,079.14

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Solution

The fourth proportional to 17,942.13, 26,920.03 and 8,079.14 is: 12,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,942.13 : 26,920.03 = 8,079.14 : x
  2. Step 2: Convert to fraction form
    17,942.13/26,920.03 = 8,079.14/x
  3. Step 3: Cross multiply
    17,942.13x = 26,920.03 × 8,079.14
  4. Step 4: Simplify right side
    17,942.13x = 217,490,691.17
  5. Step 5: Solve for x
    x = 217,490,691.17/17,942.13
  6. Step 6: Final answer
    x = 12,121.79

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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.