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Finding the Fourth Proportional to 16.92, 25.29 and 13.56

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Solution

The fourth proportional to 16.92, 25.29 and 13.56 is: 20.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.92 : 25.29 = 13.56 : x
  2. Step 2: Convert to fraction form
    16.92/25.29 = 13.56/x
  3. Step 3: Cross multiply
    16.92x = 25.29 × 13.56
  4. Step 4: Simplify right side
    16.92x = 342.93
  5. Step 5: Solve for x
    x = 342.93/16.92
  6. Step 6: Final answer
    x = 20.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.