Home / 20,488,640.24-28,274,314.20-11,321,202.80

Finding the Fourth Proportional to 20,488,640.24, 28,274,314.20 and 11,321,202.80

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Solution

The fourth proportional to 20,488,640.24, 28,274,314.20 and 11,321,202.80 is: 15,623,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488,640.24 : 28,274,314.20 = 11,321,202.80 : x
  2. Step 2: Convert to fraction form
    20,488,640.24/28,274,314.20 = 11,321,202.80/x
  3. Step 3: Cross multiply
    20,488,640.24x = 28,274,314.20 × 11,321,202.80
  4. Step 4: Simplify right side
    20,488,640.24x = 320,099,245,089,119.75
  5. Step 5: Solve for x
    x = 320,099,245,089,119.75/20,488,640.24
  6. Step 6: Final answer
    x = 15,623,254.71

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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.