Home / 20,028.60-30,043.56-6,880.80

Finding the Fourth Proportional to 20,028.60, 30,043.56 and 6,880.80

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Solution

The fourth proportional to 20,028.60, 30,043.56 and 6,880.80 is: 10,321.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.60 : 30,043.56 = 6,880.80 : x
  2. Step 2: Convert to fraction form
    20,028.60/30,043.56 = 6,880.80/x
  3. Step 3: Cross multiply
    20,028.60x = 30,043.56 × 6,880.80
  4. Step 4: Simplify right side
    20,028.60x = 206,723,727.65
  5. Step 5: Solve for x
    x = 206,723,727.65/20,028.60
  6. Step 6: Final answer
    x = 10,321.43

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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.