Home / 18,831.64-28,247.62-4,791.68

Finding the Fourth Proportional to 18,831.64, 28,247.62 and 4,791.68

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Solution

The fourth proportional to 18,831.64, 28,247.62 and 4,791.68 is: 7,187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.64 : 28,247.62 = 4,791.68 : x
  2. Step 2: Convert to fraction form
    18,831.64/28,247.62 = 4,791.68/x
  3. Step 3: Cross multiply
    18,831.64x = 28,247.62 × 4,791.68
  4. Step 4: Simplify right side
    18,831.64x = 135,353,555.80
  5. Step 5: Solve for x
    x = 135,353,555.80/18,831.64
  6. Step 6: Final answer
    x = 7,187.56

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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.