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Finding the Fourth Proportional to 14.68, 21.89 and 12.44

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Solution

The fourth proportional to 14.68, 21.89 and 12.44 is: 18.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.68 : 21.89 = 12.44 : x
  2. Step 2: Convert to fraction form
    14.68/21.89 = 12.44/x
  3. Step 3: Cross multiply
    14.68x = 21.89 × 12.44
  4. Step 4: Simplify right side
    14.68x = 272.31
  5. Step 5: Solve for x
    x = 272.31/14.68
  6. Step 6: Final answer
    x = 18.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.