Home / 18,831.89-28,247.99-4,791.93

Finding the Fourth Proportional to 18,831.89, 28,247.99 and 4,791.93

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Solution

The fourth proportional to 18,831.89, 28,247.99 and 4,791.93 is: 7,187.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.89 : 28,247.99 = 4,791.93 : x
  2. Step 2: Convert to fraction form
    18,831.89/28,247.99 = 4,791.93/x
  3. Step 3: Cross multiply
    18,831.89x = 28,247.99 × 4,791.93
  4. Step 4: Simplify right side
    18,831.89x = 135,362,390.72
  5. Step 5: Solve for x
    x = 135,362,390.72/18,831.89
  6. Step 6: Final answer
    x = 7,187.93

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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.