Home / 20,956,361,986.32-31,419,046,089.40-12,673,407,590.88

Finding the Fourth Proportional to 20,956,361,986.32, 31,419,046,089.40 and 12,673,407,590.88

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Solution

The fourth proportional to 20,956,361,986.32, 31,419,046,089.40 and 12,673,407,590.88 is: 19,000,739,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,361,986.32 : 31,419,046,089.40 = 12,673,407,590.88 : x
  2. Step 2: Convert to fraction form
    20,956,361,986.32/31,419,046,089.40 = 12,673,407,590.88/x
  3. Step 3: Cross multiply
    20,956,361,986.32x = 31,419,046,089.40 × 12,673,407,590.88
  4. Step 4: Simplify right side
    20,956,361,986.32x = 398,186,377,207,610,540,032
  5. Step 5: Solve for x
    x = 398,186,377,207,610,540,032/20,956,361,986.32
  6. Step 6: Final answer
    x = 19,000,739,606.79

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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.