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Finding the Fourth Proportional to 16,163.20, 22,310.90 and 13,658.59

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Solution

The fourth proportional to 16,163.20, 22,310.90 and 13,658.59 is: 18,853.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,163.20 : 22,310.90 = 13,658.59 : x
  2. Step 2: Convert to fraction form
    16,163.20/22,310.90 = 13,658.59/x
  3. Step 3: Cross multiply
    16,163.20x = 22,310.90 × 13,658.59
  4. Step 4: Simplify right side
    16,163.20x = 304,735,435.63
  5. Step 5: Solve for x
    x = 304,735,435.63/16,163.20
  6. Step 6: Final answer
    x = 18,853.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.