Home / 20,383,765.96-28,128,747.54-11,091,372.52

Finding the Fourth Proportional to 20,383,765.96, 28,128,747.54 and 11,091,372.52

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Solution

The fourth proportional to 20,383,765.96, 28,128,747.54 and 11,091,372.52 is: 15,305,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383,765.96 : 28,128,747.54 = 11,091,372.52 : x
  2. Step 2: Convert to fraction form
    20,383,765.96/28,128,747.54 = 11,091,372.52/x
  3. Step 3: Cross multiply
    20,383,765.96x = 28,128,747.54 × 11,091,372.52
  4. Step 4: Simplify right side
    20,383,765.96x = 311,986,417,487,173.56
  5. Step 5: Solve for x
    x = 311,986,417,487,173.56/20,383,765.96
  6. Step 6: Final answer
    x = 15,305,631.85

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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.