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Finding the Fourth Proportional to 13.74, 20.62 and 6.52

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Solution

The fourth proportional to 13.74, 20.62 and 6.52 is: 9.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.74 : 20.62 = 6.52 : x
  2. Step 2: Convert to fraction form
    13.74/20.62 = 6.52/x
  3. Step 3: Cross multiply
    13.74x = 20.62 × 6.52
  4. Step 4: Simplify right side
    13.74x = 134.40
  5. Step 5: Solve for x
    x = 134.40/13.74
  6. Step 6: Final answer
    x = 9.78

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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.