Home / 20,785,260,618.80-31,177,890,928.20-12,795,789,201.20

Finding the Fourth Proportional to 20,785,260,618.80, 31,177,890,928.20 and 12,795,789,201.20

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Solution

The fourth proportional to 20,785,260,618.80, 31,177,890,928.20 and 12,795,789,201.20 is: 19,193,683,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,260,618.80 : 31,177,890,928.20 = 12,795,789,201.20 : x
  2. Step 2: Convert to fraction form
    20,785,260,618.80/31,177,890,928.20 = 12,795,789,201.20/x
  3. Step 3: Cross multiply
    20,785,260,618.80x = 31,177,890,928.20 × 12,795,789,201.20
  4. Step 4: Simplify right side
    20,785,260,618.80x = 398,945,720,055,253,041,152
  5. Step 5: Solve for x
    x = 398,945,720,055,253,041,152/20,785,260,618.80
  6. Step 6: Final answer
    x = 19,193,683,801.80

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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.