Home / 12,102.38-18,155.50-4,202.86

Finding the Fourth Proportional to 12,102.38, 18,155.50 and 4,202.86

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Solution

The fourth proportional to 12,102.38, 18,155.50 and 4,202.86 is: 6,304.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.38 : 18,155.50 = 4,202.86 : x
  2. Step 2: Convert to fraction form
    12,102.38/18,155.50 = 4,202.86/x
  3. Step 3: Cross multiply
    12,102.38x = 18,155.50 × 4,202.86
  4. Step 4: Simplify right side
    12,102.38x = 76,305,024.73
  5. Step 5: Solve for x
    x = 76,305,024.73/12,102.38
  6. Step 6: Final answer
    x = 6,304.96

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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.