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Finding the Third Proportional to 12,072.50 and 18,655

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Solution

The third proportional to 12,072.50 and 18,655 is: 28,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.50 : 18,655 = 18,655 : x
  2. Step 2: Convert to fraction form
    12,072.50/18,655 = 18,655/x
  3. Step 3: Cross multiply
    12,072.50x = 18,655 × 18,655
  4. Step 4: Simplify right side
    12,072.50x = 348,009,025
  5. Step 5: Solve for x
    x = 348,009,025/12,072.50
  6. Step 6: Final answer
    x = 28,826.59

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.