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Finding the Third Proportional to 9,918 and 21,753

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Solution

The third proportional to 9,918 and 21,753 is: 47,710.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918 : 21,753 = 21,753 : x
  2. Step 2: Convert to fraction form
    9,918/21,753 = 21,753/x
  3. Step 3: Cross multiply
    9,918x = 21,753 × 21,753
  4. Step 4: Simplify right side
    9,918x = 473,193,009
  5. Step 5: Solve for x
    x = 473,193,009/9,918
  6. Step 6: Final answer
    x = 47,710.53

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.