Home / 20,665,469.30-30,981,407.79-7,211,745.14

Finding the Fourth Proportional to 20,665,469.30, 30,981,407.79 and 7,211,745.14

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Solution

The fourth proportional to 20,665,469.30, 30,981,407.79 and 7,211,745.14 is: 10,811,756.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665,469.30 : 30,981,407.79 = 7,211,745.14 : x
  2. Step 2: Convert to fraction form
    20,665,469.30/30,981,407.79 = 7,211,745.14/x
  3. Step 3: Cross multiply
    20,665,469.30x = 30,981,407.79 × 7,211,745.14
  4. Step 4: Simplify right side
    20,665,469.30x = 223,430,017,059,890.62
  5. Step 5: Solve for x
    x = 223,430,017,059,890.62/20,665,469.30
  6. Step 6: Final answer
    x = 10,811,756.26

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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.