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Finding the Third Proportional to 9,603 and 12,721.50

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Solution

The third proportional to 9,603 and 12,721.50 is: 16,852.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,603 : 12,721.50 = 12,721.50 : x
  2. Step 2: Convert to fraction form
    9,603/12,721.50 = 12,721.50/x
  3. Step 3: Cross multiply
    9,603x = 12,721.50 × 12,721.50
  4. Step 4: Simplify right side
    9,603x = 161,836,562.25
  5. Step 5: Solve for x
    x = 161,836,562.25/9,603
  6. Step 6: Final answer
    x = 16,852.71

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.