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Finding the Third Proportional to 17,028 and 18,324

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Solution

The third proportional to 17,028 and 18,324 is: 19,718.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,028 : 18,324 = 18,324 : x
  2. Step 2: Convert to fraction form
    17,028/18,324 = 18,324/x
  3. Step 3: Cross multiply
    17,028x = 18,324 × 18,324
  4. Step 4: Simplify right side
    17,028x = 335,768,976
  5. Step 5: Solve for x
    x = 335,768,976/17,028
  6. Step 6: Final answer
    x = 19,718.64

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.