Home / 20,167.20-27,831.69-11,214.57

Finding the Fourth Proportional to 20,167.20, 27,831.69 and 11,214.57

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Solution

The fourth proportional to 20,167.20, 27,831.69 and 11,214.57 is: 15,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.20 : 27,831.69 = 11,214.57 : x
  2. Step 2: Convert to fraction form
    20,167.20/27,831.69 = 11,214.57/x
  3. Step 3: Cross multiply
    20,167.20x = 27,831.69 × 11,214.57
  4. Step 4: Simplify right side
    20,167.20x = 312,120,435.72
  5. Step 5: Solve for x
    x = 312,120,435.72/20,167.20
  6. Step 6: Final answer
    x = 15,476.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.