Home / 20,123,561.78-27,769,114.41-11,421,911.60

Finding the Fourth Proportional to 20,123,561.78, 27,769,114.41 and 11,421,911.60

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Solution

The fourth proportional to 20,123,561.78, 27,769,114.41 and 11,421,911.60 is: 15,761,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123,561.78 : 27,769,114.41 = 11,421,911.60 : x
  2. Step 2: Convert to fraction form
    20,123,561.78/27,769,114.41 = 11,421,911.60/x
  3. Step 3: Cross multiply
    20,123,561.78x = 27,769,114.41 × 11,421,911.60
  4. Step 4: Simplify right side
    20,123,561.78x = 317,176,370,001,306.12
  5. Step 5: Solve for x
    x = 317,176,370,001,306.12/20,123,561.78
  6. Step 6: Final answer
    x = 15,761,442.90

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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.