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Finding the Third Proportional to 15,122 and 20,610

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Solution

The third proportional to 15,122 and 20,610 is: 28,089.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122 : 20,610 = 20,610 : x
  2. Step 2: Convert to fraction form
    15,122/20,610 = 20,610/x
  3. Step 3: Cross multiply
    15,122x = 20,610 × 20,610
  4. Step 4: Simplify right side
    15,122x = 424,772,100
  5. Step 5: Solve for x
    x = 424,772,100/15,122
  6. Step 6: Final answer
    x = 28,089.68

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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.