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Finding the Fourth Proportional to 17.14, 23.60 and 15.16

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Solution

The fourth proportional to 17.14, 23.60 and 15.16 is: 20.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.14 : 23.60 = 15.16 : x
  2. Step 2: Convert to fraction form
    17.14/23.60 = 15.16/x
  3. Step 3: Cross multiply
    17.14x = 23.60 × 15.16
  4. Step 4: Simplify right side
    17.14x = 357.78
  5. Step 5: Solve for x
    x = 357.78/17.14
  6. Step 6: Final answer
    x = 20.87

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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.