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Finding the Third Proportional to 16,429 and 36,138

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Solution

The third proportional to 16,429 and 36,138 is: 79,490.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,429 : 36,138 = 36,138 : x
  2. Step 2: Convert to fraction form
    16,429/36,138 = 36,138/x
  3. Step 3: Cross multiply
    16,429x = 36,138 × 36,138
  4. Step 4: Simplify right side
    16,429x = 1,305,955,044
  5. Step 5: Solve for x
    x = 1,305,955,044/16,429
  6. Step 6: Final answer
    x = 79,490.84

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.