Home / 20,278,874,191.62-27,981,146,121.54-11,702,171,928.08

Finding the Fourth Proportional to 20,278,874,191.62, 27,981,146,121.54 and 11,702,171,928.08

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Solution

The fourth proportional to 20,278,874,191.62, 27,981,146,121.54 and 11,702,171,928.08 is: 16,146,861,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278,874,191.62 : 27,981,146,121.54 = 11,702,171,928.08 : x
  2. Step 2: Convert to fraction form
    20,278,874,191.62/27,981,146,121.54 = 11,702,171,928.08/x
  3. Step 3: Cross multiply
    20,278,874,191.62x = 27,981,146,121.54 × 11,702,171,928.08
  4. Step 4: Simplify right side
    20,278,874,191.62x = 327,440,182,658,989,948,928
  5. Step 5: Solve for x
    x = 327,440,182,658,989,948,928/20,278,874,191.62
  6. Step 6: Final answer
    x = 16,146,861,978.87

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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.