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Finding the Third Proportional to 15.12 and 22.11

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Solution

The third proportional to 15.12 and 22.11 is: 32.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.12 : 22.11 = 22.11 : x
  2. Step 2: Convert to fraction form
    15.12/22.11 = 22.11/x
  3. Step 3: Cross multiply
    15.12x = 22.11 × 22.11
  4. Step 4: Simplify right side
    15.12x = 488.71
  5. Step 5: Solve for x
    x = 488.71/15.12
  6. Step 6: Final answer
    x = 32.33

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.