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Finding the Third Proportional to 12,820.50 and 18,726.75

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Solution

The third proportional to 12,820.50 and 18,726.75 is: 27,353.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.50 : 18,726.75 = 18,726.75 : x
  2. Step 2: Convert to fraction form
    12,820.50/18,726.75 = 18,726.75/x
  3. Step 3: Cross multiply
    12,820.50x = 18,726.75 × 18,726.75
  4. Step 4: Simplify right side
    12,820.50x = 350,691,165.56
  5. Step 5: Solve for x
    x = 350,691,165.56/12,820.50
  6. Step 6: Final answer
    x = 27,353.94

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.