Home / 18,288.20-27,432.30-12,132.20

Finding the Fourth Proportional to 18,288.20, 27,432.30 and 12,132.20

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Solution

The fourth proportional to 18,288.20, 27,432.30 and 12,132.20 is: 18,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.20 : 27,432.30 = 12,132.20 : x
  2. Step 2: Convert to fraction form
    18,288.20/27,432.30 = 12,132.20/x
  3. Step 3: Cross multiply
    18,288.20x = 27,432.30 × 12,132.20
  4. Step 4: Simplify right side
    18,288.20x = 332,814,150.06
  5. Step 5: Solve for x
    x = 332,814,150.06/18,288.20
  6. Step 6: Final answer
    x = 18,198.30

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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.