Home / 18,831.08-28,246.78-4,791.11

Finding the Fourth Proportional to 18,831.08, 28,246.78 and 4,791.11

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Solution

The fourth proportional to 18,831.08, 28,246.78 and 4,791.11 is: 7,186.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831.08 : 28,246.78 = 4,791.11 : x
  2. Step 2: Convert to fraction form
    18,831.08/28,246.78 = 4,791.11/x
  3. Step 3: Cross multiply
    18,831.08x = 28,246.78 × 4,791.11
  4. Step 4: Simplify right side
    18,831.08x = 135,333,488.76
  5. Step 5: Solve for x
    x = 135,333,488.76/18,831.08
  6. Step 6: Final answer
    x = 7,186.71

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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.