Home / 20,167.79-27,831.44-11,214.77

Finding the Fourth Proportional to 20,167.79, 27,831.44 and 11,214.77

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Solution

The fourth proportional to 20,167.79, 27,831.44 and 11,214.77 is: 15,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.79 : 27,831.44 = 11,214.77 : x
  2. Step 2: Convert to fraction form
    20,167.79/27,831.44 = 11,214.77/x
  3. Step 3: Cross multiply
    20,167.79x = 27,831.44 × 11,214.77
  4. Step 4: Simplify right side
    20,167.79x = 312,123,003.14
  5. Step 5: Solve for x
    x = 312,123,003.14/20,167.79
  6. Step 6: Final answer
    x = 15,476.32

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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.