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Finding the Third Proportional to 6,918.89 and 10,742.84

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Solution

The third proportional to 6,918.89 and 10,742.84 is: 16,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.89 : 10,742.84 = 10,742.84 : x
  2. Step 2: Convert to fraction form
    6,918.89/10,742.84 = 10,742.84/x
  3. Step 3: Cross multiply
    6,918.89x = 10,742.84 × 10,742.84
  4. Step 4: Simplify right side
    6,918.89x = 115,408,523.98
  5. Step 5: Solve for x
    x = 115,408,523.98/6,918.89
  6. Step 6: Final answer
    x = 16,680.21

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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.