Home / 28,347,816,399.70-39,120,002,324.86-15,311,998,994.95

Finding the Fourth Proportional to 28,347,816,399.70, 39,120,002,324.86 and 15,311,998,994.95

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Solution

The fourth proportional to 28,347,816,399.70, 39,120,002,324.86 and 15,311,998,994.95 is: 21,130,567,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347,816,399.70 : 39,120,002,324.86 = 15,311,998,994.95 : x
  2. Step 2: Convert to fraction form
    28,347,816,399.70/39,120,002,324.86 = 15,311,998,994.95/x
  3. Step 3: Cross multiply
    28,347,816,399.70x = 39,120,002,324.86 × 15,311,998,994.95
  4. Step 4: Simplify right side
    28,347,816,399.70x = 599,005,436,280,526,209,024
  5. Step 5: Solve for x
    x = 599,005,436,280,526,209,024/28,347,816,399.70
  6. Step 6: Final answer
    x = 21,130,567,089.71

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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.