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Finding the Third Proportional to 12,318 and 17,553

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Solution

The third proportional to 12,318 and 17,553 is: 25,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318 : 17,553 = 17,553 : x
  2. Step 2: Convert to fraction form
    12,318/17,553 = 17,553/x
  3. Step 3: Cross multiply
    12,318x = 17,553 × 17,553
  4. Step 4: Simplify right side
    12,318x = 308,107,809
  5. Step 5: Solve for x
    x = 308,107,809/12,318
  6. Step 6: Final answer
    x = 25,012.81

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.