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Finding the Third Proportional to 6,729.75 and 10,420.13

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Solution

The third proportional to 6,729.75 and 10,420.13 is: 16,134.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,729.75 : 10,420.13 = 10,420.13 : x
  2. Step 2: Convert to fraction form
    6,729.75/10,420.13 = 10,420.13/x
  3. Step 3: Cross multiply
    6,729.75x = 10,420.13 × 10,420.13
  4. Step 4: Simplify right side
    6,729.75x = 108,579,005.02
  5. Step 5: Solve for x
    x = 108,579,005.02/6,729.75
  6. Step 6: Final answer
    x = 16,134.18

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.