Home / 20,722,760.60-31,084,140.90-13,127,163.80

Finding the Fourth Proportional to 20,722,760.60, 31,084,140.90 and 13,127,163.80

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Solution

The fourth proportional to 20,722,760.60, 31,084,140.90 and 13,127,163.80 is: 19,690,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,760.60 : 31,084,140.90 = 13,127,163.80 : x
  2. Step 2: Convert to fraction form
    20,722,760.60/31,084,140.90 = 13,127,163.80/x
  3. Step 3: Cross multiply
    20,722,760.60x = 31,084,140.90 × 13,127,163.80
  4. Step 4: Simplify right side
    20,722,760.60x = 408,046,609,176,579.44
  5. Step 5: Solve for x
    x = 408,046,609,176,579.44/20,722,760.60
  6. Step 6: Final answer
    x = 19,690,745.70

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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.