Home / 20,123,562.78-27,769,115.79-11,421,912.60

Finding the Fourth Proportional to 20,123,562.78, 27,769,115.79 and 11,421,912.60

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Solution

The fourth proportional to 20,123,562.78, 27,769,115.79 and 11,421,912.60 is: 15,761,444.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123,562.78 : 27,769,115.79 = 11,421,912.60 : x
  2. Step 2: Convert to fraction form
    20,123,562.78/27,769,115.79 = 11,421,912.60/x
  3. Step 3: Cross multiply
    20,123,562.78x = 27,769,115.79 × 11,421,912.60
  4. Step 4: Simplify right side
    20,123,562.78x = 317,176,413,532,659.94
  5. Step 5: Solve for x
    x = 317,176,413,532,659.94/20,123,562.78
  6. Step 6: Final answer
    x = 15,761,444.28

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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.