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Finding the Fourth Proportional to 16.50, 24.87 and 14.28

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Solution

The fourth proportional to 16.50, 24.87 and 14.28 is: 21.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.50 : 24.87 = 14.28 : x
  2. Step 2: Convert to fraction form
    16.50/24.87 = 14.28/x
  3. Step 3: Cross multiply
    16.50x = 24.87 × 14.28
  4. Step 4: Simplify right side
    16.50x = 355.14
  5. Step 5: Solve for x
    x = 355.14/16.50
  6. Step 6: Final answer
    x = 21.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.