Home / 20,278,874,178.76-27,981,146,103.79-11,702,171,915.33

Finding the Fourth Proportional to 20,278,874,178.76, 27,981,146,103.79 and 11,702,171,915.33

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Solution

The fourth proportional to 20,278,874,178.76, 27,981,146,103.79 and 11,702,171,915.33 is: 16,146,861,961.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278,874,178.76 : 27,981,146,103.79 = 11,702,171,915.33 : x
  2. Step 2: Convert to fraction form
    20,278,874,178.76/27,981,146,103.79 = 11,702,171,915.33/x
  3. Step 3: Cross multiply
    20,278,874,178.76x = 27,981,146,103.79 × 11,702,171,915.33
  4. Step 4: Simplify right side
    20,278,874,178.76x = 327,440,182,094,516,781,056
  5. Step 5: Solve for x
    x = 327,440,182,094,516,781,056/20,278,874,178.76
  6. Step 6: Final answer
    x = 16,146,861,961.28

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Double scale
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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.