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Finding the Third Proportional to 16,484 and 18,660

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Solution

The third proportional to 16,484 and 18,660 is: 21,123.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,484 : 18,660 = 18,660 : x
  2. Step 2: Convert to fraction form
    16,484/18,660 = 18,660/x
  3. Step 3: Cross multiply
    16,484x = 18,660 × 18,660
  4. Step 4: Simplify right side
    16,484x = 348,195,600
  5. Step 5: Solve for x
    x = 348,195,600/16,484
  6. Step 6: Final answer
    x = 21,123.25

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.