Home / 20,790,889.65-31,188,473.48-7,847,942.38

Finding the Fourth Proportional to 20,790,889.65, 31,188,473.48 and 7,847,942.38

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Solution

The fourth proportional to 20,790,889.65, 31,188,473.48 and 7,847,942.38 is: 11,772,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,889.65 : 31,188,473.48 = 7,847,942.38 : x
  2. Step 2: Convert to fraction form
    20,790,889.65/31,188,473.48 = 7,847,942.38/x
  3. Step 3: Cross multiply
    20,790,889.65x = 31,188,473.48 × 7,847,942.38
  4. Step 4: Simplify right side
    20,790,889.65x = 244,765,342,732,846.78
  5. Step 5: Solve for x
    x = 244,765,342,732,846.78/20,790,889.65
  6. Step 6: Final answer
    x = 11,772,720.98

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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.