Home / 13,921.42-20,882.27-11,144.47

Finding the Fourth Proportional to 13,921.42, 20,882.27 and 11,144.47

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Solution

The fourth proportional to 13,921.42, 20,882.27 and 11,144.47 is: 16,716.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.42 : 20,882.27 = 11,144.47 : x
  2. Step 2: Convert to fraction form
    13,921.42/20,882.27 = 11,144.47/x
  3. Step 3: Cross multiply
    13,921.42x = 20,882.27 × 11,144.47
  4. Step 4: Simplify right side
    13,921.42x = 232,721,831.55
  5. Step 5: Solve for x
    x = 232,721,831.55/13,921.42
  6. Step 6: Final answer
    x = 16,716.82

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1.5x scale

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.