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Finding the Third Proportional to 13,142 and 18,717

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Solution

The third proportional to 13,142 and 18,717 is: 26,656.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142 : 18,717 = 18,717 : x
  2. Step 2: Convert to fraction form
    13,142/18,717 = 18,717/x
  3. Step 3: Cross multiply
    13,142x = 18,717 × 18,717
  4. Step 4: Simplify right side
    13,142x = 350,326,089
  5. Step 5: Solve for x
    x = 350,326,089/13,142
  6. Step 6: Final answer
    x = 26,656.98

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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.