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Finding the Third Proportional to 9,999 and 13,617

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Solution

The third proportional to 9,999 and 13,617 is: 18,544.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999 : 13,617 = 13,617 : x
  2. Step 2: Convert to fraction form
    9,999/13,617 = 13,617/x
  3. Step 3: Cross multiply
    9,999x = 13,617 × 13,617
  4. Step 4: Simplify right side
    9,999x = 185,422,689
  5. Step 5: Solve for x
    x = 185,422,689/9,999
  6. Step 6: Final answer
    x = 18,544.12

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.