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Finding the Fourth Proportional to 17.06, 25.53 and 13.87

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Solution

The fourth proportional to 17.06, 25.53 and 13.87 is: 20.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.06 : 25.53 = 13.87 : x
  2. Step 2: Convert to fraction form
    17.06/25.53 = 13.87/x
  3. Step 3: Cross multiply
    17.06x = 25.53 × 13.87
  4. Step 4: Simplify right side
    17.06x = 354.10
  5. Step 5: Solve for x
    x = 354.10/17.06
  6. Step 6: Final answer
    x = 20.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.