Home / 12,831,745.20-19,247,617.80-11,981,439.60

Finding the Fourth Proportional to 12,831,745.20, 19,247,617.80 and 11,981,439.60

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Solution

The fourth proportional to 12,831,745.20, 19,247,617.80 and 11,981,439.60 is: 17,972,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831,745.20 : 19,247,617.80 = 11,981,439.60 : x
  2. Step 2: Convert to fraction form
    12,831,745.20/19,247,617.80 = 11,981,439.60/x
  3. Step 3: Cross multiply
    12,831,745.20x = 19,247,617.80 × 11,981,439.60
  4. Step 4: Simplify right side
    12,831,745.20x = 230,614,170,114,584.88
  5. Step 5: Solve for x
    x = 230,614,170,114,584.88/12,831,745.20
  6. Step 6: Final answer
    x = 17,972,159.40

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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.