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Finding the Third Proportional to 21,197.25 and 28,788.75

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Solution

The third proportional to 21,197.25 and 28,788.75 is: 39,099.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.25 : 28,788.75 = 28,788.75 : x
  2. Step 2: Convert to fraction form
    21,197.25/28,788.75 = 28,788.75/x
  3. Step 3: Cross multiply
    21,197.25x = 28,788.75 × 28,788.75
  4. Step 4: Simplify right side
    21,197.25x = 828,792,126.56
  5. Step 5: Solve for x
    x = 828,792,126.56/21,197.25
  6. Step 6: Final answer
    x = 39,099.04

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.