Home / 22,378.30-30,882.95-12,819.76

Finding the Fourth Proportional to 22,378.30, 30,882.95 and 12,819.76

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Solution

The fourth proportional to 22,378.30, 30,882.95 and 12,819.76 is: 17,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.30 : 30,882.95 = 12,819.76 : x
  2. Step 2: Convert to fraction form
    22,378.30/30,882.95 = 12,819.76/x
  3. Step 3: Cross multiply
    22,378.30x = 30,882.95 × 12,819.76
  4. Step 4: Simplify right side
    22,378.30x = 395,912,007.09
  5. Step 5: Solve for x
    x = 395,912,007.09/22,378.30
  6. Step 6: Final answer
    x = 17,691.78

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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.