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Finding the Third Proportional to 12,321 and 18,937

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Solution

The third proportional to 12,321 and 18,937 is: 29,105.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321 : 18,937 = 18,937 : x
  2. Step 2: Convert to fraction form
    12,321/18,937 = 18,937/x
  3. Step 3: Cross multiply
    12,321x = 18,937 × 18,937
  4. Step 4: Simplify right side
    12,321x = 358,609,969
  5. Step 5: Solve for x
    x = 358,609,969/12,321
  6. Step 6: Final answer
    x = 29,105.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.