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Finding the Fourth Proportional to 22,711.75, 34,067.77 and 7,920.61

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Solution

The fourth proportional to 22,711.75, 34,067.77 and 7,920.61 is: 11,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.75 : 34,067.77 = 7,920.61 : x
  2. Step 2: Convert to fraction form
    22,711.75/34,067.77 = 7,920.61/x
  3. Step 3: Cross multiply
    22,711.75x = 34,067.77 × 7,920.61
  4. Step 4: Simplify right side
    22,711.75x = 269,837,519.74
  5. Step 5: Solve for x
    x = 269,837,519.74/22,711.75
  6. Step 6: Final answer
    x = 11,880.97

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.