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Finding the Third Proportional to 5,395.50 and 12,989.25

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Solution

The third proportional to 5,395.50 and 12,989.25 is: 31,270.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,395.50 : 12,989.25 = 12,989.25 : x
  2. Step 2: Convert to fraction form
    5,395.50/12,989.25 = 12,989.25/x
  3. Step 3: Cross multiply
    5,395.50x = 12,989.25 × 12,989.25
  4. Step 4: Simplify right side
    5,395.50x = 168,720,615.56
  5. Step 5: Solve for x
    x = 168,720,615.56/5,395.50
  6. Step 6: Final answer
    x = 31,270.62

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.