Home / 20,634,728.70-28,445,912.19-14,420,481.60

Finding the Fourth Proportional to 20,634,728.70, 28,445,912.19 and 14,420,481.60

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Solution

The fourth proportional to 20,634,728.70, 28,445,912.19 and 14,420,481.60 is: 19,879,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634,728.70 : 28,445,912.19 = 14,420,481.60 : x
  2. Step 2: Convert to fraction form
    20,634,728.70/28,445,912.19 = 14,420,481.60/x
  3. Step 3: Cross multiply
    20,634,728.70x = 28,445,912.19 × 14,420,481.60
  4. Step 4: Simplify right side
    20,634,728.70x = 410,203,753,331,110.69
  5. Step 5: Solve for x
    x = 410,203,753,331,110.69/20,634,728.70
  6. Step 6: Final answer
    x = 19,879,289.88

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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.