Home / 20,379,427.08-28,123,608.42-11,211,873

Finding the Fourth Proportional to 20,379,427.08, 28,123,608.42 and 11,211,873

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Solution

The fourth proportional to 20,379,427.08, 28,123,608.42 and 11,211,873 is: 15,472,384.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379,427.08 : 28,123,608.42 = 11,211,873 : x
  2. Step 2: Convert to fraction form
    20,379,427.08/28,123,608.42 = 11,211,873/x
  3. Step 3: Cross multiply
    20,379,427.08x = 28,123,608.42 × 11,211,873
  4. Step 4: Simplify right side
    20,379,427.08x = 315,318,325,906,770.69
  5. Step 5: Solve for x
    x = 315,318,325,906,770.69/20,379,427.08
  6. Step 6: Final answer
    x = 15,472,384.22

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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.