Home / 20,936.83-31,399-6,894.27

Finding the Fourth Proportional to 20,936.83, 31,399 and 6,894.27

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Solution

The fourth proportional to 20,936.83, 31,399 and 6,894.27 is: 10,339.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.83 : 31,399 = 6,894.27 : x
  2. Step 2: Convert to fraction form
    20,936.83/31,399 = 6,894.27/x
  3. Step 3: Cross multiply
    20,936.83x = 31,399 × 6,894.27
  4. Step 4: Simplify right side
    20,936.83x = 216,473,183.73
  5. Step 5: Solve for x
    x = 216,473,183.73/20,936.83
  6. Step 6: Final answer
    x = 10,339.35

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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.