Home / 25,782,912.80-38,627,713.20-12,289,997.60

Finding the Fourth Proportional to 25,782,912.80, 38,627,713.20 and 12,289,997.60

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Solution

The fourth proportional to 25,782,912.80, 38,627,713.20 and 12,289,997.60 is: 18,412,756.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,782,912.80 : 38,627,713.20 = 12,289,997.60 : x
  2. Step 2: Convert to fraction form
    25,782,912.80/38,627,713.20 = 12,289,997.60/x
  3. Step 3: Cross multiply
    25,782,912.80x = 38,627,713.20 × 12,289,997.60
  4. Step 4: Simplify right side
    25,782,912.80x = 474,734,502,521,488.31
  5. Step 5: Solve for x
    x = 474,734,502,521,488.31/25,782,912.80
  6. Step 6: Final answer
    x = 18,412,756.78

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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.