Home / 20,956,361,987.32-31,419,046,090.90-12,673,407,591.88

Finding the Fourth Proportional to 20,956,361,987.32, 31,419,046,090.90 and 12,673,407,591.88

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Solution

The fourth proportional to 20,956,361,987.32, 31,419,046,090.90 and 12,673,407,591.88 is: 19,000,739,608.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,361,987.32 : 31,419,046,090.90 = 12,673,407,591.88 : x
  2. Step 2: Convert to fraction form
    20,956,361,987.32/31,419,046,090.90 = 12,673,407,591.88/x
  3. Step 3: Cross multiply
    20,956,361,987.32x = 31,419,046,090.90 × 12,673,407,591.88
  4. Step 4: Simplify right side
    20,956,361,987.32x = 398,186,377,258,039,705,600
  5. Step 5: Solve for x
    x = 398,186,377,258,039,705,600/20,956,361,987.32
  6. Step 6: Final answer
    x = 19,000,739,608.29

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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.