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Finding the Fourth Proportional to 25,279.86, 37,919.81 and 6,811.86

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Solution

The fourth proportional to 25,279.86, 37,919.81 and 6,811.86 is: 10,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,279.86 : 37,919.81 = 6,811.86 : x
  2. Step 2: Convert to fraction form
    25,279.86/37,919.81 = 6,811.86/x
  3. Step 3: Cross multiply
    25,279.86x = 37,919.81 × 6,811.86
  4. Step 4: Simplify right side
    25,279.86x = 258,304,436.95
  5. Step 5: Solve for x
    x = 258,304,436.95/25,279.86
  6. Step 6: Final answer
    x = 10,217.80

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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.