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Finding the Third Proportional to 7,191 and 15,647

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Solution

The third proportional to 7,191 and 15,647 is: 34,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191 : 15,647 = 15,647 : x
  2. Step 2: Convert to fraction form
    7,191/15,647 = 15,647/x
  3. Step 3: Cross multiply
    7,191x = 15,647 × 15,647
  4. Step 4: Simplify right side
    7,191x = 244,828,609
  5. Step 5: Solve for x
    x = 244,828,609/7,191
  6. Step 6: Final answer
    x = 34,046.53

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.