Home / 20,212,416,015.20-30,318,624,022.80-7,121,862,159.20

Finding the Fourth Proportional to 20,212,416,015.20, 30,318,624,022.80 and 7,121,862,159.20

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Solution

The fourth proportional to 20,212,416,015.20, 30,318,624,022.80 and 7,121,862,159.20 is: 10,682,793,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212,416,015.20 : 30,318,624,022.80 = 7,121,862,159.20 : x
  2. Step 2: Convert to fraction form
    20,212,416,015.20/30,318,624,022.80 = 7,121,862,159.20/x
  3. Step 3: Cross multiply
    20,212,416,015.20x = 30,318,624,022.80 × 7,121,862,159.20
  4. Step 4: Simplify right side
    20,212,416,015.20x = 215,925,061,146,991,394,816
  5. Step 5: Solve for x
    x = 215,925,061,146,991,394,816/20,212,416,015.20
  6. Step 6: Final answer
    x = 10,682,793,238.80

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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.