Home / 28,831.20-43,257.60-11,313.60

Finding the Fourth Proportional to 28,831.20, 43,257.60 and 11,313.60

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Solution

The fourth proportional to 28,831.20, 43,257.60 and 11,313.60 is: 16,974.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.20 : 43,257.60 = 11,313.60 : x
  2. Step 2: Convert to fraction form
    28,831.20/43,257.60 = 11,313.60/x
  3. Step 3: Cross multiply
    28,831.20x = 43,257.60 × 11,313.60
  4. Step 4: Simplify right side
    28,831.20x = 489,399,183.36
  5. Step 5: Solve for x
    x = 489,399,183.36/28,831.20
  6. Step 6: Final answer
    x = 16,974.64

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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.