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Finding the Third Proportional to 8,718 and 13,119

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Solution

The third proportional to 8,718 and 13,119 is: 19,741.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718 : 13,119 = 13,119 : x
  2. Step 2: Convert to fraction form
    8,718/13,119 = 13,119/x
  3. Step 3: Cross multiply
    8,718x = 13,119 × 13,119
  4. Step 4: Simplify right side
    8,718x = 172,108,161
  5. Step 5: Solve for x
    x = 172,108,161/8,718
  6. Step 6: Final answer
    x = 19,741.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.