Home / 20,972,222.41-28,942,564.85-11,679,792.42

Finding the Fourth Proportional to 20,972,222.41, 28,942,564.85 and 11,679,792.42

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Solution

The fourth proportional to 20,972,222.41, 28,942,564.85 and 11,679,792.42 is: 16,118,613.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972,222.41 : 28,942,564.85 = 11,679,792.42 : x
  2. Step 2: Convert to fraction form
    20,972,222.41/28,942,564.85 = 11,679,792.42/x
  3. Step 3: Cross multiply
    20,972,222.41x = 28,942,564.85 × 11,679,792.42
  4. Step 4: Simplify right side
    20,972,222.41x = 338,043,149,550,388.44
  5. Step 5: Solve for x
    x = 338,043,149,550,388.44/20,972,222.41
  6. Step 6: Final answer
    x = 16,118,613.61

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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.