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Finding the Fourth Proportional to 22,578.88, 33,856.92 and 13,221.72

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Solution

The fourth proportional to 22,578.88, 33,856.92 and 13,221.72 is: 19,825.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,578.88 : 33,856.92 = 13,221.72 : x
  2. Step 2: Convert to fraction form
    22,578.88/33,856.92 = 13,221.72/x
  3. Step 3: Cross multiply
    22,578.88x = 33,856.92 × 13,221.72
  4. Step 4: Simplify right side
    22,578.88x = 447,646,716.30
  5. Step 5: Solve for x
    x = 447,646,716.30/22,578.88
  6. Step 6: Final answer
    x = 19,825.90

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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.