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Finding the Fourth Proportional to 16.63, 24.85 and 13.59

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Solution

The fourth proportional to 16.63, 24.85 and 13.59 is: 20.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.63 : 24.85 = 13.59 : x
  2. Step 2: Convert to fraction form
    16.63/24.85 = 13.59/x
  3. Step 3: Cross multiply
    16.63x = 24.85 × 13.59
  4. Step 4: Simplify right side
    16.63x = 337.71
  5. Step 5: Solve for x
    x = 337.71/16.63
  6. Step 6: Final answer
    x = 20.31

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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.