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Finding the Fourth Proportional to 14.41, 19.86 and 12.25

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Solution

The fourth proportional to 14.41, 19.86 and 12.25 is: 16.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.41 : 19.86 = 12.25 : x
  2. Step 2: Convert to fraction form
    14.41/19.86 = 12.25/x
  3. Step 3: Cross multiply
    14.41x = 19.86 × 12.25
  4. Step 4: Simplify right side
    14.41x = 243.29
  5. Step 5: Solve for x
    x = 243.29/14.41
  6. Step 6: Final answer
    x = 16.88

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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.