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Finding the Third Proportional to 6,669 and 11,115.50

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Solution

The third proportional to 6,669 and 11,115.50 is: 18,526.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,669 : 11,115.50 = 11,115.50 : x
  2. Step 2: Convert to fraction form
    6,669/11,115.50 = 11,115.50/x
  3. Step 3: Cross multiply
    6,669x = 11,115.50 × 11,115.50
  4. Step 4: Simplify right side
    6,669x = 123,554,340.25
  5. Step 5: Solve for x
    x = 123,554,340.25/6,669
  6. Step 6: Final answer
    x = 18,526.67

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.