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Finding the Fourth Proportional to 25,845.76, 38,760.72 and 8,310.88

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Solution

The fourth proportional to 25,845.76, 38,760.72 and 8,310.88 is: 12,463.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,845.76 : 38,760.72 = 8,310.88 : x
  2. Step 2: Convert to fraction form
    25,845.76/38,760.72 = 8,310.88/x
  3. Step 3: Cross multiply
    25,845.76x = 38,760.72 × 8,310.88
  4. Step 4: Simplify right side
    25,845.76x = 322,135,692.63
  5. Step 5: Solve for x
    x = 322,135,692.63/25,845.76
  6. Step 6: Final answer
    x = 12,463.77

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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.