Home / 12,143,198.82-18,212,115.90-3,505,422

Finding the Fourth Proportional to 12,143,198.82, 18,212,115.90 and 3,505,422

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Solution

The fourth proportional to 12,143,198.82, 18,212,115.90 and 3,505,422 is: 5,257,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143,198.82 : 18,212,115.90 = 3,505,422 : x
  2. Step 2: Convert to fraction form
    12,143,198.82/18,212,115.90 = 3,505,422/x
  3. Step 3: Cross multiply
    12,143,198.82x = 18,212,115.90 × 3,505,422
  4. Step 4: Simplify right side
    12,143,198.82x = 63,841,151,742,409.80
  5. Step 5: Solve for x
    x = 63,841,151,742,409.80/12,143,198.82
  6. Step 6: Final answer
    x = 5,257,358.68

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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.