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Finding the Third Proportional to 13,740 and 18,730

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Solution

The third proportional to 13,740 and 18,730 is: 25,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740 : 18,730 = 18,730 : x
  2. Step 2: Convert to fraction form
    13,740/18,730 = 18,730/x
  3. Step 3: Cross multiply
    13,740x = 18,730 × 18,730
  4. Step 4: Simplify right side
    13,740x = 350,812,900
  5. Step 5: Solve for x
    x = 350,812,900/13,740
  6. Step 6: Final answer
    x = 25,532.23

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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.