Home / 20,747,538.78-31,120,868.34-6,915,497.64

Finding the Fourth Proportional to 20,747,538.78, 31,120,868.34 and 6,915,497.64

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Solution

The fourth proportional to 20,747,538.78, 31,120,868.34 and 6,915,497.64 is: 10,373,099.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747,538.78 : 31,120,868.34 = 6,915,497.64 : x
  2. Step 2: Convert to fraction form
    20,747,538.78/31,120,868.34 = 6,915,497.64/x
  3. Step 3: Cross multiply
    20,747,538.78x = 31,120,868.34 × 6,915,497.64
  4. Step 4: Simplify right side
    20,747,538.78x = 215,216,291,560,020.72
  5. Step 5: Solve for x
    x = 215,216,291,560,020.72/20,747,538.78
  6. Step 6: Final answer
    x = 10,373,099.86

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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.