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Finding the Fourth Proportional to 16.97, 23.45 and 13.89

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Solution

The fourth proportional to 16.97, 23.45 and 13.89 is: 19.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.97 : 23.45 = 13.89 : x
  2. Step 2: Convert to fraction form
    16.97/23.45 = 13.89/x
  3. Step 3: Cross multiply
    16.97x = 23.45 × 13.89
  4. Step 4: Simplify right side
    16.97x = 325.61
  5. Step 5: Solve for x
    x = 325.61/16.97
  6. Step 6: Final answer
    x = 19.19

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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.