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Finding the Fourth Proportional to 25,697.80, 38,546.82 and 8,169.40

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Solution

The fourth proportional to 25,697.80, 38,546.82 and 8,169.40 is: 12,254.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,697.80 : 38,546.82 = 8,169.40 : x
  2. Step 2: Convert to fraction form
    25,697.80/38,546.82 = 8,169.40/x
  3. Step 3: Cross multiply
    25,697.80x = 38,546.82 × 8,169.40
  4. Step 4: Simplify right side
    25,697.80x = 314,904,391.31
  5. Step 5: Solve for x
    x = 314,904,391.31/25,697.80
  6. Step 6: Final answer
    x = 12,254.14

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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.