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Finding the Fourth Proportional to 24.38, 33.66 and 15.76

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Solution

The fourth proportional to 24.38, 33.66 and 15.76 is: 21.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.38 : 33.66 = 15.76 : x
  2. Step 2: Convert to fraction form
    24.38/33.66 = 15.76/x
  3. Step 3: Cross multiply
    24.38x = 33.66 × 15.76
  4. Step 4: Simplify right side
    24.38x = 530.48
  5. Step 5: Solve for x
    x = 530.48/24.38
  6. Step 6: Final answer
    x = 21.76

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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.