Home / 18,149.40-27,233.70-8,290.20

Finding the Fourth Proportional to 18,149.40, 27,233.70 and 8,290.20

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Solution

The fourth proportional to 18,149.40, 27,233.70 and 8,290.20 is: 12,439.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.40 : 27,233.70 = 8,290.20 : x
  2. Step 2: Convert to fraction form
    18,149.40/27,233.70 = 8,290.20/x
  3. Step 3: Cross multiply
    18,149.40x = 27,233.70 × 8,290.20
  4. Step 4: Simplify right side
    18,149.40x = 225,772,819.74
  5. Step 5: Solve for x
    x = 225,772,819.74/18,149.40
  6. Step 6: Final answer
    x = 12,439.69

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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.