Home / 20,383,729.94-28,128,698.34-11,091,336.50

Finding the Fourth Proportional to 20,383,729.94, 28,128,698.34 and 11,091,336.50

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Solution

The fourth proportional to 20,383,729.94, 28,128,698.34 and 11,091,336.50 is: 15,305,582.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383,729.94 : 28,128,698.34 = 11,091,336.50 : x
  2. Step 2: Convert to fraction form
    20,383,729.94/28,128,698.34 = 11,091,336.50/x
  3. Step 3: Cross multiply
    20,383,729.94x = 28,128,698.34 × 11,091,336.50
  4. Step 4: Simplify right side
    20,383,729.94x = 311,984,858,595,931.44
  5. Step 5: Solve for x
    x = 311,984,858,595,931.44/20,383,729.94
  6. Step 6: Final answer
    x = 15,305,582.42

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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.