Home / 28,337.76-39,057.12-21,251.88

Finding the Fourth Proportional to 28,337.76, 39,057.12 and 21,251.88

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Solution

The fourth proportional to 28,337.76, 39,057.12 and 21,251.88 is: 29,290.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,337.76 : 39,057.12 = 21,251.88 : x
  2. Step 2: Convert to fraction form
    28,337.76/39,057.12 = 21,251.88/x
  3. Step 3: Cross multiply
    28,337.76x = 39,057.12 × 21,251.88
  4. Step 4: Simplify right side
    28,337.76x = 830,037,227.39
  5. Step 5: Solve for x
    x = 830,037,227.39/28,337.76
  6. Step 6: Final answer
    x = 29,290.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.