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Finding the Fourth Proportional to 17.53, 26.32 and 13.74

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Solution

The fourth proportional to 17.53, 26.32 and 13.74 is: 20.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.53 : 26.32 = 13.74 : x
  2. Step 2: Convert to fraction form
    17.53/26.32 = 13.74/x
  3. Step 3: Cross multiply
    17.53x = 26.32 × 13.74
  4. Step 4: Simplify right side
    17.53x = 361.49
  5. Step 5: Solve for x
    x = 361.49/17.53
  6. Step 6: Final answer
    x = 20.62

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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.