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Finding the Third Proportional to 8,631 and 18,537.75

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Solution

The third proportional to 8,631 and 18,537.75 is: 39,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631 : 18,537.75 = 18,537.75 : x
  2. Step 2: Convert to fraction form
    8,631/18,537.75 = 18,537.75/x
  3. Step 3: Cross multiply
    8,631x = 18,537.75 × 18,537.75
  4. Step 4: Simplify right side
    8,631x = 343,648,175.06
  5. Step 5: Solve for x
    x = 343,648,175.06/8,631
  6. Step 6: Final answer
    x = 39,815.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.