Home / 20,785,372,298.20-31,178,058,447.30-12,499,994,531.80

Finding the Fourth Proportional to 20,785,372,298.20, 31,178,058,447.30 and 12,499,994,531.80

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Solution

The fourth proportional to 20,785,372,298.20, 31,178,058,447.30 and 12,499,994,531.80 is: 18,749,991,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,372,298.20 : 31,178,058,447.30 = 12,499,994,531.80 : x
  2. Step 2: Convert to fraction form
    20,785,372,298.20/31,178,058,447.30 = 12,499,994,531.80/x
  3. Step 3: Cross multiply
    20,785,372,298.20x = 31,178,058,447.30 × 12,499,994,531.80
  4. Step 4: Simplify right side
    20,785,372,298.20x = 389,725,560,103,390,740,480
  5. Step 5: Solve for x
    x = 389,725,560,103,390,740,480/20,785,372,298.20
  6. Step 6: Final answer
    x = 18,749,991,797.70

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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.