Home / 20,167.72-27,831.90-11,214.89

Finding the Fourth Proportional to 20,167.72, 27,831.90 and 11,214.89

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Solution

The fourth proportional to 20,167.72, 27,831.90 and 11,214.89 is: 15,476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.72 : 27,831.90 = 11,214.89 : x
  2. Step 2: Convert to fraction form
    20,167.72/27,831.90 = 11,214.89/x
  3. Step 3: Cross multiply
    20,167.72x = 27,831.90 × 11,214.89
  4. Step 4: Simplify right side
    20,167.72x = 312,131,704.26
  5. Step 5: Solve for x
    x = 312,131,704.26/20,167.72
  6. Step 6: Final answer
    x = 15,476.80

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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.