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Finding the Fourth Proportional to 17.51, 24.17 and 12.89

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Solution

The fourth proportional to 17.51, 24.17 and 12.89 is: 17.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.51 : 24.17 = 12.89 : x
  2. Step 2: Convert to fraction form
    17.51/24.17 = 12.89/x
  3. Step 3: Cross multiply
    17.51x = 24.17 × 12.89
  4. Step 4: Simplify right side
    17.51x = 311.37
  5. Step 5: Solve for x
    x = 311.37/17.51
  6. Step 6: Final answer
    x = 17.79

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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.