Home / 20,881.28-31,305.84-6,832.79

Finding the Fourth Proportional to 20,881.28, 31,305.84 and 6,832.79

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Solution

The fourth proportional to 20,881.28, 31,305.84 and 6,832.79 is: 10,243.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.28 : 31,305.84 = 6,832.79 : x
  2. Step 2: Convert to fraction form
    20,881.28/31,305.84 = 6,832.79/x
  3. Step 3: Cross multiply
    20,881.28x = 31,305.84 × 6,832.79
  4. Step 4: Simplify right side
    20,881.28x = 213,906,230.49
  5. Step 5: Solve for x
    x = 213,906,230.49/20,881.28
  6. Step 6: Final answer
    x = 10,243.92

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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.