Home / 12,821,938.20-19,202,375.70-7,419,202.56

Finding the Fourth Proportional to 12,821,938.20, 19,202,375.70 and 7,419,202.56

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Solution

The fourth proportional to 12,821,938.20, 19,202,375.70 and 7,419,202.56 is: 11,111,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821,938.20 : 19,202,375.70 = 7,419,202.56 : x
  2. Step 2: Convert to fraction form
    12,821,938.20/19,202,375.70 = 7,419,202.56/x
  3. Step 3: Cross multiply
    12,821,938.20x = 19,202,375.70 × 7,419,202.56
  4. Step 4: Simplify right side
    12,821,938.20x = 142,466,314,951,521.78
  5. Step 5: Solve for x
    x = 142,466,314,951,521.78/12,821,938.20
  6. Step 6: Final answer
    x = 11,111,137.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.