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Finding the Fourth Proportional to 14.33, 21.52 and 12.21

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Solution

The fourth proportional to 14.33, 21.52 and 12.21 is: 18.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.33 : 21.52 = 12.21 : x
  2. Step 2: Convert to fraction form
    14.33/21.52 = 12.21/x
  3. Step 3: Cross multiply
    14.33x = 21.52 × 12.21
  4. Step 4: Simplify right side
    14.33x = 262.68
  5. Step 5: Solve for x
    x = 262.68/14.33
  6. Step 6: Final answer
    x = 18.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.