Home / 18,719.37-28,079.46-5,571.99

Finding the Fourth Proportional to 18,719.37, 28,079.46 and 5,571.99

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Solution

The fourth proportional to 18,719.37, 28,079.46 and 5,571.99 is: 8,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.37 : 28,079.46 = 5,571.99 : x
  2. Step 2: Convert to fraction form
    18,719.37/28,079.46 = 5,571.99/x
  3. Step 3: Cross multiply
    18,719.37x = 28,079.46 × 5,571.99
  4. Step 4: Simplify right side
    18,719.37x = 156,458,470.33
  5. Step 5: Solve for x
    x = 156,458,470.33/18,719.37
  6. Step 6: Final answer
    x = 8,358.11

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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.