Home / 20,960.43-31,443.77-6,921.94

Finding the Fourth Proportional to 20,960.43, 31,443.77 and 6,921.94

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Solution

The fourth proportional to 20,960.43, 31,443.77 and 6,921.94 is: 10,383.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.43 : 31,443.77 = 6,921.94 : x
  2. Step 2: Convert to fraction form
    20,960.43/31,443.77 = 6,921.94/x
  3. Step 3: Cross multiply
    20,960.43x = 31,443.77 × 6,921.94
  4. Step 4: Simplify right side
    20,960.43x = 217,651,854.70
  5. Step 5: Solve for x
    x = 217,651,854.70/20,960.43
  6. Step 6: Final answer
    x = 10,383.94

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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.