Home / 18,831.83-28,247.90-4,791.87

Finding the Fourth Proportional to 18,831.83, 28,247.90 and 4,791.87

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Solution

The fourth proportional to 18,831.83, 28,247.90 and 4,791.87 is: 7,187.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.83 : 28,247.90 = 4,791.87 : x
  2. Step 2: Convert to fraction form
    18,831.83/28,247.90 = 4,791.87/x
  3. Step 3: Cross multiply
    18,831.83x = 28,247.90 × 4,791.87
  4. Step 4: Simplify right side
    18,831.83x = 135,360,240.61
  5. Step 5: Solve for x
    x = 135,360,240.61/18,831.83
  6. Step 6: Final answer
    x = 7,187.85

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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.