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Finding the Fourth Proportional to 25.41, 38.11 and 13.98

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Solution

The fourth proportional to 25.41, 38.11 and 13.98 is: 20.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.41 : 38.11 = 13.98 : x
  2. Step 2: Convert to fraction form
    25.41/38.11 = 13.98/x
  3. Step 3: Cross multiply
    25.41x = 38.11 × 13.98
  4. Step 4: Simplify right side
    25.41x = 532.74
  5. Step 5: Solve for x
    x = 532.74/25.41
  6. Step 6: Final answer
    x = 20.97

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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.