Home / 20,859,920.20-31,289,880.30-7,394,998.60

Finding the Fourth Proportional to 20,859,920.20, 31,289,880.30 and 7,394,998.60

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Solution

The fourth proportional to 20,859,920.20, 31,289,880.30 and 7,394,998.60 is: 11,092,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859,920.20 : 31,289,880.30 = 7,394,998.60 : x
  2. Step 2: Convert to fraction form
    20,859,920.20/31,289,880.30 = 7,394,998.60/x
  3. Step 3: Cross multiply
    20,859,920.20x = 31,289,880.30 × 7,394,998.60
  4. Step 4: Simplify right side
    20,859,920.20x = 231,388,621,012,667.56
  5. Step 5: Solve for x
    x = 231,388,621,012,667.56/20,859,920.20
  6. Step 6: Final answer
    x = 11,092,497.90

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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.