Home / 20,251.60-30,377.40-7,105.30

Finding the Fourth Proportional to 20,251.60, 30,377.40 and 7,105.30

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Solution

The fourth proportional to 20,251.60, 30,377.40 and 7,105.30 is: 10,657.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.60 : 30,377.40 = 7,105.30 : x
  2. Step 2: Convert to fraction form
    20,251.60/30,377.40 = 7,105.30/x
  3. Step 3: Cross multiply
    20,251.60x = 30,377.40 × 7,105.30
  4. Step 4: Simplify right side
    20,251.60x = 215,840,540.22
  5. Step 5: Solve for x
    x = 215,840,540.22/20,251.60
  6. Step 6: Final answer
    x = 10,657.95

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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.