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Finding the Fourth Proportional to 16.97, 23.39 and 13.70

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Solution

The fourth proportional to 16.97, 23.39 and 13.70 is: 18.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.97 : 23.39 = 13.70 : x
  2. Step 2: Convert to fraction form
    16.97/23.39 = 13.70/x
  3. Step 3: Cross multiply
    16.97x = 23.39 × 13.70
  4. Step 4: Simplify right side
    16.97x = 320.26
  5. Step 5: Solve for x
    x = 320.26/16.97
  6. Step 6: Final answer
    x = 18.88

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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.