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Finding the Third Proportional to 8,703 and 21,642.75

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Solution

The third proportional to 8,703 and 21,642.75 is: 53,821.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703 : 21,642.75 = 21,642.75 : x
  2. Step 2: Convert to fraction form
    8,703/21,642.75 = 21,642.75/x
  3. Step 3: Cross multiply
    8,703x = 21,642.75 × 21,642.75
  4. Step 4: Simplify right side
    8,703x = 468,408,627.56
  5. Step 5: Solve for x
    x = 468,408,627.56/8,703
  6. Step 6: Final answer
    x = 53,821.51

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Why These Related Problems?

These problems maintain the same ratio (2.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.