Home / 21,780,135.20-32,670,202.80-18,378,912.80

Finding the Fourth Proportional to 21,780,135.20, 32,670,202.80 and 18,378,912.80

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Solution

The fourth proportional to 21,780,135.20, 32,670,202.80 and 18,378,912.80 is: 27,568,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,135.20 : 32,670,202.80 = 18,378,912.80 : x
  2. Step 2: Convert to fraction form
    21,780,135.20/32,670,202.80 = 18,378,912.80/x
  3. Step 3: Cross multiply
    21,780,135.20x = 32,670,202.80 × 18,378,912.80
  4. Step 4: Simplify right side
    21,780,135.20x = 600,442,808,419,515.88
  5. Step 5: Solve for x
    x = 600,442,808,419,515.88/21,780,135.20
  6. Step 6: Final answer
    x = 27,568,369.20

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1.5x scale

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.