Home / 20,858,704.75-28,782,938.54-12,040,996.78

Finding the Fourth Proportional to 20,858,704.75, 28,782,938.54 and 12,040,996.78

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Solution

The fourth proportional to 20,858,704.75, 28,782,938.54 and 12,040,996.78 is: 16,615,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858,704.75 : 28,782,938.54 = 12,040,996.78 : x
  2. Step 2: Convert to fraction form
    20,858,704.75/28,782,938.54 = 12,040,996.78/x
  3. Step 3: Cross multiply
    20,858,704.75x = 28,782,938.54 × 12,040,996.78
  4. Step 4: Simplify right side
    20,858,704.75x = 346,575,270,279,077.88
  5. Step 5: Solve for x
    x = 346,575,270,279,077.88/20,858,704.75
  6. Step 6: Final answer
    x = 16,615,378.30

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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.