Home / 20,785,372,321.20-31,178,058,481.80-12,499,994,554.80

Finding the Fourth Proportional to 20,785,372,321.20, 31,178,058,481.80 and 12,499,994,554.80

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Solution

The fourth proportional to 20,785,372,321.20, 31,178,058,481.80 and 12,499,994,554.80 is: 18,749,991,832.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,372,321.20 : 31,178,058,481.80 = 12,499,994,554.80 : x
  2. Step 2: Convert to fraction form
    20,785,372,321.20/31,178,058,481.80 = 12,499,994,554.80/x
  3. Step 3: Cross multiply
    20,785,372,321.20x = 31,178,058,481.80 × 12,499,994,554.80
  4. Step 4: Simplify right side
    20,785,372,321.20x = 389,725,561,251,735,928,832
  5. Step 5: Solve for x
    x = 389,725,561,251,735,928,832/20,785,372,321.20
  6. Step 6: Final answer
    x = 18,749,991,832.20

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1.5x scale

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.