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Finding the Fourth Proportional to 24.47, 33.71 and 21.02

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Solution

The fourth proportional to 24.47, 33.71 and 21.02 is: 28.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.47 : 33.71 = 21.02 : x
  2. Step 2: Convert to fraction form
    24.47/33.71 = 21.02/x
  3. Step 3: Cross multiply
    24.47x = 33.71 × 21.02
  4. Step 4: Simplify right side
    24.47x = 708.31
  5. Step 5: Solve for x
    x = 708.31/24.47
  6. Step 6: Final answer
    x = 28.95

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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.