Home / 22,819.60-31,491.06-13,388.20

Finding the Fourth Proportional to 22,819.60, 31,491.06 and 13,388.20

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Solution

The fourth proportional to 22,819.60, 31,491.06 and 13,388.20 is: 18,475.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,819.60 : 31,491.06 = 13,388.20 : x
  2. Step 2: Convert to fraction form
    22,819.60/31,491.06 = 13,388.20/x
  3. Step 3: Cross multiply
    22,819.60x = 31,491.06 × 13,388.20
  4. Step 4: Simplify right side
    22,819.60x = 421,608,609.49
  5. Step 5: Solve for x
    x = 421,608,609.49/22,819.60
  6. Step 6: Final answer
    x = 18,475.72

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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.