Home / 27,831.20-41,748.40-8,112.80

Finding the Fourth Proportional to 27,831.20, 41,748.40 and 8,112.80

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Solution

The fourth proportional to 27,831.20, 41,748.40 and 8,112.80 is: 12,169.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.20 : 41,748.40 = 8,112.80 : x
  2. Step 2: Convert to fraction form
    27,831.20/41,748.40 = 8,112.80/x
  3. Step 3: Cross multiply
    27,831.20x = 41,748.40 × 8,112.80
  4. Step 4: Simplify right side
    27,831.20x = 338,696,419.52
  5. Step 5: Solve for x
    x = 338,696,419.52/27,831.20
  6. Step 6: Final answer
    x = 12,169.67

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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.