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Finding the Third Proportional to 16,646 and 36,820

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Solution

The third proportional to 16,646 and 36,820 is: 81,443.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,646 : 36,820 = 36,820 : x
  2. Step 2: Convert to fraction form
    16,646/36,820 = 36,820/x
  3. Step 3: Cross multiply
    16,646x = 36,820 × 36,820
  4. Step 4: Simplify right side
    16,646x = 1,355,712,400
  5. Step 5: Solve for x
    x = 1,355,712,400/16,646
  6. Step 6: Final answer
    x = 81,443.73

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.