Home / 20,101.28-30,129.24-9,700.88

Finding the Fourth Proportional to 20,101.28, 30,129.24 and 9,700.88

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Solution

The fourth proportional to 20,101.28, 30,129.24 and 9,700.88 is: 14,540.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.28 : 30,129.24 = 9,700.88 : x
  2. Step 2: Convert to fraction form
    20,101.28/30,129.24 = 9,700.88/x
  3. Step 3: Cross multiply
    20,101.28x = 30,129.24 × 9,700.88
  4. Step 4: Simplify right side
    20,101.28x = 292,280,141.73
  5. Step 5: Solve for x
    x = 292,280,141.73/20,101.28
  6. Step 6: Final answer
    x = 14,540.37

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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.