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Finding the Fourth Proportional to 16.16, 24.15 and 12.95

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Solution

The fourth proportional to 16.16, 24.15 and 12.95 is: 19.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.16 : 24.15 = 12.95 : x
  2. Step 2: Convert to fraction form
    16.16/24.15 = 12.95/x
  3. Step 3: Cross multiply
    16.16x = 24.15 × 12.95
  4. Step 4: Simplify right side
    16.16x = 312.62
  5. Step 5: Solve for x
    x = 312.62/16.16
  6. Step 6: Final answer
    x = 19.35

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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.