Home / 18,311.38-27,489.52-12,076.60

Finding the Fourth Proportional to 18,311.38, 27,489.52 and 12,076.60

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Solution

The fourth proportional to 18,311.38, 27,489.52 and 12,076.60 is: 18,129.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.38 : 27,489.52 = 12,076.60 : x
  2. Step 2: Convert to fraction form
    18,311.38/27,489.52 = 12,076.60/x
  3. Step 3: Cross multiply
    18,311.38x = 27,489.52 × 12,076.60
  4. Step 4: Simplify right side
    18,311.38x = 331,979,937.23
  5. Step 5: Solve for x
    x = 331,979,937.23/18,311.38
  6. Step 6: Final answer
    x = 18,129.71

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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.