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Finding the Third Proportional to 15,017 and 21,631

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Solution

The third proportional to 15,017 and 21,631 is: 31,158.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017 : 21,631 = 21,631 : x
  2. Step 2: Convert to fraction form
    15,017/21,631 = 21,631/x
  3. Step 3: Cross multiply
    15,017x = 21,631 × 21,631
  4. Step 4: Simplify right side
    15,017x = 467,900,161
  5. Step 5: Solve for x
    x = 467,900,161/15,017
  6. Step 6: Final answer
    x = 31,158.03

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.