Home / 20,908.94-31,367.79-6,867.86

Finding the Fourth Proportional to 20,908.94, 31,367.79 and 6,867.86

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Solution

The fourth proportional to 20,908.94, 31,367.79 and 6,867.86 is: 10,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.94 : 31,367.79 = 6,867.86 : x
  2. Step 2: Convert to fraction form
    20,908.94/31,367.79 = 6,867.86/x
  3. Step 3: Cross multiply
    20,908.94x = 31,367.79 × 6,867.86
  4. Step 4: Simplify right side
    20,908.94x = 215,429,433.39
  5. Step 5: Solve for x
    x = 215,429,433.39/20,908.94
  6. Step 6: Final answer
    x = 10,303.22

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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.