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Finding the Third Proportional to 7,707 and 12,069.75

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Solution

The third proportional to 7,707 and 12,069.75 is: 18,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,707 : 12,069.75 = 12,069.75 : x
  2. Step 2: Convert to fraction form
    7,707/12,069.75 = 12,069.75/x
  3. Step 3: Cross multiply
    7,707x = 12,069.75 × 12,069.75
  4. Step 4: Simplify right side
    7,707x = 145,678,865.06
  5. Step 5: Solve for x
    x = 145,678,865.06/7,707
  6. Step 6: Final answer
    x = 18,902.15

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.