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Finding the Third Proportional to 10,486 and 21,828

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Solution

The third proportional to 10,486 and 21,828 is: 45,437.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486 : 21,828 = 21,828 : x
  2. Step 2: Convert to fraction form
    10,486/21,828 = 21,828/x
  3. Step 3: Cross multiply
    10,486x = 21,828 × 21,828
  4. Step 4: Simplify right side
    10,486x = 476,461,584
  5. Step 5: Solve for x
    x = 476,461,584/10,486
  6. Step 6: Final answer
    x = 45,437.88

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.