Home / 28,534,188,015.20-42,801,282,022.80-20,656,956,936.80

Finding the Fourth Proportional to 28,534,188,015.20, 42,801,282,022.80 and 20,656,956,936.80

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Solution

The fourth proportional to 28,534,188,015.20, 42,801,282,022.80 and 20,656,956,936.80 is: 30,985,435,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534,188,015.20 : 42,801,282,022.80 = 20,656,956,936.80 : x
  2. Step 2: Convert to fraction form
    28,534,188,015.20/42,801,282,022.80 = 20,656,956,936.80/x
  3. Step 3: Cross multiply
    28,534,188,015.20x = 42,801,282,022.80 × 20,656,956,936.80
  4. Step 4: Simplify right side
    28,534,188,015.20x = 884,144,239,584,811,679,744
  5. Step 5: Solve for x
    x = 884,144,239,584,811,679,744/28,534,188,015.20
  6. Step 6: Final answer
    x = 30,985,435,405.20

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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.