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Finding the Fourth Proportional to 14.86, 20.44 and 12.23

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Solution

The fourth proportional to 14.86, 20.44 and 12.23 is: 16.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.86 : 20.44 = 12.23 : x
  2. Step 2: Convert to fraction form
    14.86/20.44 = 12.23/x
  3. Step 3: Cross multiply
    14.86x = 20.44 × 12.23
  4. Step 4: Simplify right side
    14.86x = 249.85
  5. Step 5: Solve for x
    x = 249.85/14.86
  6. Step 6: Final answer
    x = 16.82

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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.