Home / 20,978,229.72-31,467,344.58-7,524,505.56

Finding the Fourth Proportional to 20,978,229.72, 31,467,344.58 and 7,524,505.56

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Solution

The fourth proportional to 20,978,229.72, 31,467,344.58 and 7,524,505.56 is: 11,286,758.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,978,229.72 : 31,467,344.58 = 7,524,505.56 : x
  2. Step 2: Convert to fraction form
    20,978,229.72/31,467,344.58 = 7,524,505.56/x
  3. Step 3: Cross multiply
    20,978,229.72x = 31,467,344.58 × 7,524,505.56
  4. Step 4: Simplify right side
    20,978,229.72x = 236,776,209,250,645.84
  5. Step 5: Solve for x
    x = 236,776,209,250,645.84/20,978,229.72
  6. Step 6: Final answer
    x = 11,286,758.34

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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.