Home / 20,499.20-30,744.60-5,704.40

Finding the Fourth Proportional to 20,499.20, 30,744.60 and 5,704.40

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Solution

The fourth proportional to 20,499.20, 30,744.60 and 5,704.40 is: 8,555.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.20 : 30,744.60 = 5,704.40 : x
  2. Step 2: Convert to fraction form
    20,499.20/30,744.60 = 5,704.40/x
  3. Step 3: Cross multiply
    20,499.20x = 30,744.60 × 5,704.40
  4. Step 4: Simplify right side
    20,499.20x = 175,379,496.24
  5. Step 5: Solve for x
    x = 175,379,496.24/20,499.20
  6. Step 6: Final answer
    x = 8,555.43

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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.