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Finding the Third Proportional to 9,045 and 11,920.50

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Solution

The third proportional to 9,045 and 11,920.50 is: 15,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,045 : 11,920.50 = 11,920.50 : x
  2. Step 2: Convert to fraction form
    9,045/11,920.50 = 11,920.50/x
  3. Step 3: Cross multiply
    9,045x = 11,920.50 × 11,920.50
  4. Step 4: Simplify right side
    9,045x = 142,098,320.25
  5. Step 5: Solve for x
    x = 142,098,320.25/9,045
  6. Step 6: Final answer
    x = 15,710.15

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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.