Home / 20,732.30-31,074.15-15,532.10

Finding the Fourth Proportional to 20,732.30, 31,074.15 and 15,532.10

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Solution

The fourth proportional to 20,732.30, 31,074.15 and 15,532.10 is: 23,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.30 : 31,074.15 = 15,532.10 : x
  2. Step 2: Convert to fraction form
    20,732.30/31,074.15 = 15,532.10/x
  3. Step 3: Cross multiply
    20,732.30x = 31,074.15 × 15,532.10
  4. Step 4: Simplify right side
    20,732.30x = 482,646,805.22
  5. Step 5: Solve for x
    x = 482,646,805.22/20,732.30
  6. Step 6: Final answer
    x = 23,279.95

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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.