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Finding the Third Proportional to 12,321 and 16,382.25

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Solution

The third proportional to 12,321 and 16,382.25 is: 21,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321 : 16,382.25 = 16,382.25 : x
  2. Step 2: Convert to fraction form
    12,321/16,382.25 = 16,382.25/x
  3. Step 3: Cross multiply
    12,321x = 16,382.25 × 16,382.25
  4. Step 4: Simplify right side
    12,321x = 268,378,115.06
  5. Step 5: Solve for x
    x = 268,378,115.06/12,321
  6. Step 6: Final answer
    x = 21,782.17

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.