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Finding the Fourth Proportional to 16.62, 22.92 and 13.89

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Solution

The fourth proportional to 16.62, 22.92 and 13.89 is: 19.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.62 : 22.92 = 13.89 : x
  2. Step 2: Convert to fraction form
    16.62/22.92 = 13.89/x
  3. Step 3: Cross multiply
    16.62x = 22.92 × 13.89
  4. Step 4: Simplify right side
    16.62x = 318.17
  5. Step 5: Solve for x
    x = 318.17/16.62
  6. Step 6: Final answer
    x = 19.14

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Why These Related Problems?

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