Home / 20,665,470.05-30,981,408.92-7,211,745.89

Finding the Fourth Proportional to 20,665,470.05, 30,981,408.92 and 7,211,745.89

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Solution

The fourth proportional to 20,665,470.05, 30,981,408.92 and 7,211,745.89 is: 10,811,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665,470.05 : 30,981,408.92 = 7,211,745.89 : x
  2. Step 2: Convert to fraction form
    20,665,470.05/30,981,408.92 = 7,211,745.89/x
  3. Step 3: Cross multiply
    20,665,470.05x = 30,981,408.92 × 7,211,745.89
  4. Step 4: Simplify right side
    20,665,470.05x = 223,430,048,409,160.59
  5. Step 5: Solve for x
    x = 223,430,048,409,160.59/20,665,470.05
  6. Step 6: Final answer
    x = 10,811,757.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.