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Finding the Third Proportional to 9,515 and 19,693

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Solution

The third proportional to 9,515 and 19,693 is: 40,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,515 : 19,693 = 19,693 : x
  2. Step 2: Convert to fraction form
    9,515/19,693 = 19,693/x
  3. Step 3: Cross multiply
    9,515x = 19,693 × 19,693
  4. Step 4: Simplify right side
    9,515x = 387,814,249
  5. Step 5: Solve for x
    x = 387,814,249/9,515
  6. Step 6: Final answer
    x = 40,758.20

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.