Home / 18,727.20-28,163.70-16,831.80

Finding the Fourth Proportional to 18,727.20, 28,163.70 and 16,831.80

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Solution

The fourth proportional to 18,727.20, 28,163.70 and 16,831.80 is: 25,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.20 : 28,163.70 = 16,831.80 : x
  2. Step 2: Convert to fraction form
    18,727.20/28,163.70 = 16,831.80/x
  3. Step 3: Cross multiply
    18,727.20x = 28,163.70 × 16,831.80
  4. Step 4: Simplify right side
    18,727.20x = 474,045,765.66
  5. Step 5: Solve for x
    x = 474,045,765.66/18,727.20
  6. Step 6: Final answer
    x = 25,313.22

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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.