Home / 28,306.20-39,073.17-21,252.99

Finding the Fourth Proportional to 28,306.20, 39,073.17 and 21,252.99

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Solution

The fourth proportional to 28,306.20, 39,073.17 and 21,252.99 is: 29,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.20 : 39,073.17 = 21,252.99 : x
  2. Step 2: Convert to fraction form
    28,306.20/39,073.17 = 21,252.99/x
  3. Step 3: Cross multiply
    28,306.20x = 39,073.17 × 21,252.99
  4. Step 4: Simplify right side
    28,306.20x = 830,421,691.28
  5. Step 5: Solve for x
    x = 830,421,691.28/28,306.20
  6. Step 6: Final answer
    x = 29,337.10

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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.