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Finding the Fourth Proportional to 23,101.80, 34,660.80 and 8,311.20

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Solution

The fourth proportional to 23,101.80, 34,660.80 and 8,311.20 is: 12,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,101.80 : 34,660.80 = 8,311.20 : x
  2. Step 2: Convert to fraction form
    23,101.80/34,660.80 = 8,311.20/x
  3. Step 3: Cross multiply
    23,101.80x = 34,660.80 × 8,311.20
  4. Step 4: Simplify right side
    23,101.80x = 288,072,840.96
  5. Step 5: Solve for x
    x = 288,072,840.96/23,101.80
  6. Step 6: Final answer
    x = 12,469.71

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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.