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Finding the Third Proportional to 10,218 and 11,631

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Solution

The third proportional to 10,218 and 11,631 is: 13,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218 : 11,631 = 11,631 : x
  2. Step 2: Convert to fraction form
    10,218/11,631 = 11,631/x
  3. Step 3: Cross multiply
    10,218x = 11,631 × 11,631
  4. Step 4: Simplify right side
    10,218x = 135,280,161
  5. Step 5: Solve for x
    x = 135,280,161/10,218
  6. Step 6: Final answer
    x = 13,239.40

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.