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Finding the Fourth Proportional to 25,839, 38,758.80 and 8,308.80

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Solution

The fourth proportional to 25,839, 38,758.80 and 8,308.80 is: 12,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,839 : 38,758.80 = 8,308.80 : x
  2. Step 2: Convert to fraction form
    25,839/38,758.80 = 8,308.80/x
  3. Step 3: Cross multiply
    25,839x = 38,758.80 × 8,308.80
  4. Step 4: Simplify right side
    25,839x = 322,039,117.44
  5. Step 5: Solve for x
    x = 322,039,117.44/25,839
  6. Step 6: Final answer
    x = 12,463.30

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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.