Home / 20,823.92-31,238.46-6,785.37

Finding the Fourth Proportional to 20,823.92, 31,238.46 and 6,785.37

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Solution

The fourth proportional to 20,823.92, 31,238.46 and 6,785.37 is: 10,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.92 : 31,238.46 = 6,785.37 : x
  2. Step 2: Convert to fraction form
    20,823.92/31,238.46 = 6,785.37/x
  3. Step 3: Cross multiply
    20,823.92x = 31,238.46 × 6,785.37
  4. Step 4: Simplify right side
    20,823.92x = 211,964,509.33
  5. Step 5: Solve for x
    x = 211,964,509.33/20,823.92
  6. Step 6: Final answer
    x = 10,178.90

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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.