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Finding the Fourth Proportional to 24.47, 33.77 and 13.55

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Solution

The fourth proportional to 24.47, 33.77 and 13.55 is: 18.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.47 : 33.77 = 13.55 : x
  2. Step 2: Convert to fraction form
    24.47/33.77 = 13.55/x
  3. Step 3: Cross multiply
    24.47x = 33.77 × 13.55
  4. Step 4: Simplify right side
    24.47x = 457.70
  5. Step 5: Solve for x
    x = 457.70/24.47
  6. Step 6: Final answer
    x = 18.71

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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.