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Finding the Fourth Proportional to 25,937.20, 38,910.60 and 8,407.60

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Solution

The fourth proportional to 25,937.20, 38,910.60 and 8,407.60 is: 12,612.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,937.20 : 38,910.60 = 8,407.60 : x
  2. Step 2: Convert to fraction form
    25,937.20/38,910.60 = 8,407.60/x
  3. Step 3: Cross multiply
    25,937.20x = 38,910.60 × 8,407.60
  4. Step 4: Simplify right side
    25,937.20x = 327,144,760.56
  5. Step 5: Solve for x
    x = 327,144,760.56/25,937.20
  6. Step 6: Final answer
    x = 12,612.96

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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.