Home / 20,383,728.94-28,128,696.96-11,091,335.50

Finding the Fourth Proportional to 20,383,728.94, 28,128,696.96 and 11,091,335.50

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Solution

The fourth proportional to 20,383,728.94, 28,128,696.96 and 11,091,335.50 is: 15,305,581.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383,728.94 : 28,128,696.96 = 11,091,335.50 : x
  2. Step 2: Convert to fraction form
    20,383,728.94/28,128,696.96 = 11,091,335.50/x
  3. Step 3: Cross multiply
    20,383,728.94x = 28,128,696.96 × 11,091,335.50
  4. Step 4: Simplify right side
    20,383,728.94x = 311,984,815,161,190.06
  5. Step 5: Solve for x
    x = 311,984,815,161,190.06/20,383,728.94
  6. Step 6: Final answer
    x = 15,305,581.04

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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.