Home / 22,891.19-31,591.85-12,819.47

Finding the Fourth Proportional to 22,891.19, 31,591.85 and 12,819.47

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Solution

The fourth proportional to 22,891.19, 31,591.85 and 12,819.47 is: 17,691.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,891.19 : 31,591.85 = 12,819.47 : x
  2. Step 2: Convert to fraction form
    22,891.19/31,591.85 = 12,819.47/x
  3. Step 3: Cross multiply
    22,891.19x = 31,591.85 × 12,819.47
  4. Step 4: Simplify right side
    22,891.19x = 404,990,551.26
  5. Step 5: Solve for x
    x = 404,990,551.26/22,891.19
  6. Step 6: Final answer
    x = 17,691.99

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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.