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Finding the Third Proportional to 10,874.25 and 15,990.75

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Solution

The third proportional to 10,874.25 and 15,990.75 is: 23,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,874.25 : 15,990.75 = 15,990.75 : x
  2. Step 2: Convert to fraction form
    10,874.25/15,990.75 = 15,990.75/x
  3. Step 3: Cross multiply
    10,874.25x = 15,990.75 × 15,990.75
  4. Step 4: Simplify right side
    10,874.25x = 255,704,085.56
  5. Step 5: Solve for x
    x = 255,704,085.56/10,874.25
  6. Step 6: Final answer
    x = 23,514.64

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.