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Finding the Fourth Proportional to 17.38, 23.96 and 12.77

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Solution

The fourth proportional to 17.38, 23.96 and 12.77 is: 17.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.38 : 23.96 = 12.77 : x
  2. Step 2: Convert to fraction form
    17.38/23.96 = 12.77/x
  3. Step 3: Cross multiply
    17.38x = 23.96 × 12.77
  4. Step 4: Simplify right side
    17.38x = 305.97
  5. Step 5: Solve for x
    x = 305.97/17.38
  6. Step 6: Final answer
    x = 17.60

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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.