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Finding the Fourth Proportional to 17.37, 26.07 and 12.87

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Solution

The fourth proportional to 17.37, 26.07 and 12.87 is: 19.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.37 : 26.07 = 12.87 : x
  2. Step 2: Convert to fraction form
    17.37/26.07 = 12.87/x
  3. Step 3: Cross multiply
    17.37x = 26.07 × 12.87
  4. Step 4: Simplify right side
    17.37x = 335.52
  5. Step 5: Solve for x
    x = 335.52/17.37
  6. Step 6: Final answer
    x = 19.32

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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.