Home / 13,446.50-20,169.68-3,451.20

Finding the Fourth Proportional to 13,446.50, 20,169.68 and 3,451.20

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Solution

The fourth proportional to 13,446.50, 20,169.68 and 3,451.20 is: 5,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.50 : 20,169.68 = 3,451.20 : x
  2. Step 2: Convert to fraction form
    13,446.50/20,169.68 = 3,451.20/x
  3. Step 3: Cross multiply
    13,446.50x = 20,169.68 × 3,451.20
  4. Step 4: Simplify right side
    13,446.50x = 69,609,599.62
  5. Step 5: Solve for x
    x = 69,609,599.62/13,446.50
  6. Step 6: Final answer
    x = 5,176.78

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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.