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Finding the Third Proportional to 15,921 and 34,695

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Solution

The third proportional to 15,921 and 34,695 is: 75,607.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921 : 34,695 = 34,695 : x
  2. Step 2: Convert to fraction form
    15,921/34,695 = 34,695/x
  3. Step 3: Cross multiply
    15,921x = 34,695 × 34,695
  4. Step 4: Simplify right side
    15,921x = 1,203,743,025
  5. Step 5: Solve for x
    x = 1,203,743,025/15,921
  6. Step 6: Final answer
    x = 75,607.25

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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.