Home / 20,951.38-31,419.17-6,908.82

Finding the Fourth Proportional to 20,951.38, 31,419.17 and 6,908.82

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Solution

The fourth proportional to 20,951.38, 31,419.17 and 6,908.82 is: 10,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.38 : 31,419.17 = 6,908.82 : x
  2. Step 2: Convert to fraction form
    20,951.38/31,419.17 = 6,908.82/x
  3. Step 3: Cross multiply
    20,951.38x = 31,419.17 × 6,908.82
  4. Step 4: Simplify right side
    20,951.38x = 217,069,390.08
  5. Step 5: Solve for x
    x = 217,069,390.08/20,951.38
  6. Step 6: Final answer
    x = 10,360.62

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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.