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Finding the Third Proportional to 14,321 and 21,639

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Solution

The third proportional to 14,321 and 21,639 is: 32,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321 : 21,639 = 21,639 : x
  2. Step 2: Convert to fraction form
    14,321/21,639 = 21,639/x
  3. Step 3: Cross multiply
    14,321x = 21,639 × 21,639
  4. Step 4: Simplify right side
    14,321x = 468,246,321
  5. Step 5: Solve for x
    x = 468,246,321/14,321
  6. Step 6: Final answer
    x = 32,696.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.