Home / 18,858.20-28,291.41-5,711.60

Finding the Fourth Proportional to 18,858.20, 28,291.41 and 5,711.60

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Solution

The fourth proportional to 18,858.20, 28,291.41 and 5,711.60 is: 8,568.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.20 : 28,291.41 = 5,711.60 : x
  2. Step 2: Convert to fraction form
    18,858.20/28,291.41 = 5,711.60/x
  3. Step 3: Cross multiply
    18,858.20x = 28,291.41 × 5,711.60
  4. Step 4: Simplify right side
    18,858.20x = 161,589,236.25
  5. Step 5: Solve for x
    x = 161,589,236.25/18,858.20
  6. Step 6: Final answer
    x = 8,568.64

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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.