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Finding the Fourth Proportional to 14.86, 22.16 and 12.58

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Solution

The fourth proportional to 14.86, 22.16 and 12.58 is: 18.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.86 : 22.16 = 12.58 : x
  2. Step 2: Convert to fraction form
    14.86/22.16 = 12.58/x
  3. Step 3: Cross multiply
    14.86x = 22.16 × 12.58
  4. Step 4: Simplify right side
    14.86x = 278.66
  5. Step 5: Solve for x
    x = 278.66/14.86
  6. Step 6: Final answer
    x = 18.76

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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.