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Finding the Third Proportional to 11,214 and 15,555

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Solution

The third proportional to 11,214 and 15,555 is: 21,576.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,214 : 15,555 = 15,555 : x
  2. Step 2: Convert to fraction form
    11,214/15,555 = 15,555/x
  3. Step 3: Cross multiply
    11,214x = 15,555 × 15,555
  4. Step 4: Simplify right side
    11,214x = 241,958,025
  5. Step 5: Solve for x
    x = 241,958,025/11,214
  6. Step 6: Final answer
    x = 21,576.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.