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Finding the Third Proportional to 10,228.50 and 21,489.75

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Solution

The third proportional to 10,228.50 and 21,489.75 is: 45,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,228.50 : 21,489.75 = 21,489.75 : x
  2. Step 2: Convert to fraction form
    10,228.50/21,489.75 = 21,489.75/x
  3. Step 3: Cross multiply
    10,228.50x = 21,489.75 × 21,489.75
  4. Step 4: Simplify right side
    10,228.50x = 461,809,355.06
  5. Step 5: Solve for x
    x = 461,809,355.06/10,228.50
  6. Step 6: Final answer
    x = 45,149.27

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.