Home / 20,958,551,189.70-28,925,336,906.55-11,928,504,909.66

Finding the Fourth Proportional to 20,958,551,189.70, 28,925,336,906.55 and 11,928,504,909.66

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Solution

The fourth proportional to 20,958,551,189.70, 28,925,336,906.55 and 11,928,504,909.66 is: 16,462,780,283.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,551,189.70 : 28,925,336,906.55 = 11,928,504,909.66 : x
  2. Step 2: Convert to fraction form
    20,958,551,189.70/28,925,336,906.55 = 11,928,504,909.66/x
  3. Step 3: Cross multiply
    20,958,551,189.70x = 28,925,336,906.55 × 11,928,504,909.66
  4. Step 4: Simplify right side
    20,958,551,189.70x = 345,036,023,303,351,238,656
  5. Step 5: Solve for x
    x = 345,036,023,303,351,238,656/20,958,551,189.70
  6. Step 6: Final answer
    x = 16,462,780,283.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.