Home / 15,004,906.72-20,706,791.88-8,129,388.80

Finding the Fourth Proportional to 15,004,906.72, 20,706,791.88 and 8,129,388.80

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Solution

The fourth proportional to 15,004,906.72, 20,706,791.88 and 8,129,388.80 is: 11,218,567.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004,906.72 : 20,706,791.88 = 8,129,388.80 : x
  2. Step 2: Convert to fraction form
    15,004,906.72/20,706,791.88 = 8,129,388.80/x
  3. Step 3: Cross multiply
    15,004,906.72x = 20,706,791.88 × 8,129,388.80
  4. Step 4: Simplify right side
    15,004,906.72x = 168,333,561,993,202.94
  5. Step 5: Solve for x
    x = 168,333,561,993,202.94/15,004,906.72
  6. Step 6: Final answer
    x = 11,218,567.71

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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.