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Finding the Third Proportional to 7,699,819.50 and 11,991,675.38

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Solution

The third proportional to 7,699,819.50 and 11,991,675.38 is: 18,675,798.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,699,819.50 : 11,991,675.38 = 11,991,675.38 : x
  2. Step 2: Convert to fraction form
    7,699,819.50/11,991,675.38 = 11,991,675.38/x
  3. Step 3: Cross multiply
    7,699,819.50x = 11,991,675.38 × 11,991,675.38
  4. Step 4: Simplify right side
    7,699,819.50x = 143,800,278,299,381.38
  5. Step 5: Solve for x
    x = 143,800,278,299,381.38/7,699,819.50
  6. Step 6: Final answer
    x = 18,675,798.61

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.