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Finding the Third Proportional to 13,395.75 and 20,215.13

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Solution

The third proportional to 13,395.75 and 20,215.13 is: 30,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.75 : 20,215.13 = 20,215.13 : x
  2. Step 2: Convert to fraction form
    13,395.75/20,215.13 = 20,215.13/x
  3. Step 3: Cross multiply
    13,395.75x = 20,215.13 × 20,215.13
  4. Step 4: Simplify right side
    13,395.75x = 408,651,278.77
  5. Step 5: Solve for x
    x = 408,651,278.77/13,395.75
  6. Step 6: Final answer
    x = 30,506.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.