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Finding the Third Proportional to 6,864.75 and 10,381.50

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Solution

The third proportional to 6,864.75 and 10,381.50 is: 15,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,864.75 : 10,381.50 = 10,381.50 : x
  2. Step 2: Convert to fraction form
    6,864.75/10,381.50 = 10,381.50/x
  3. Step 3: Cross multiply
    6,864.75x = 10,381.50 × 10,381.50
  4. Step 4: Simplify right side
    6,864.75x = 107,775,542.25
  5. Step 5: Solve for x
    x = 107,775,542.25/6,864.75
  6. Step 6: Final answer
    x = 15,699.85

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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.