Home / 22,819.19-31,490.14-12,747.78

Finding the Fourth Proportional to 22,819.19, 31,490.14 and 12,747.78

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Solution

The fourth proportional to 22,819.19, 31,490.14 and 12,747.78 is: 17,591.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,819.19 : 31,490.14 = 12,747.78 : x
  2. Step 2: Convert to fraction form
    22,819.19/31,490.14 = 12,747.78/x
  3. Step 3: Cross multiply
    22,819.19x = 31,490.14 × 12,747.78
  4. Step 4: Simplify right side
    22,819.19x = 401,429,155.70
  5. Step 5: Solve for x
    x = 401,429,155.70/22,819.19
  6. Step 6: Final answer
    x = 17,591.74

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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.