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Finding the Third Proportional to 16,690 and 36,458

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Solution

The third proportional to 16,690 and 36,458 is: 79,639.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690 : 36,458 = 36,458 : x
  2. Step 2: Convert to fraction form
    16,690/36,458 = 36,458/x
  3. Step 3: Cross multiply
    16,690x = 36,458 × 36,458
  4. Step 4: Simplify right side
    16,690x = 1,329,185,764
  5. Step 5: Solve for x
    x = 1,329,185,764/16,690
  6. Step 6: Final answer
    x = 79,639.65

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.