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Finding the Third Proportional to 7,321 and 17,695

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Solution

The third proportional to 7,321 and 17,695 is: 42,769.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321 : 17,695 = 17,695 : x
  2. Step 2: Convert to fraction form
    7,321/17,695 = 17,695/x
  3. Step 3: Cross multiply
    7,321x = 17,695 × 17,695
  4. Step 4: Simplify right side
    7,321x = 313,113,025
  5. Step 5: Solve for x
    x = 313,113,025/7,321
  6. Step 6: Final answer
    x = 42,769.16

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.