Home / 20,971.26-31,455.18-6,179.94

Finding the Fourth Proportional to 20,971.26, 31,455.18 and 6,179.94

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Solution

The fourth proportional to 20,971.26, 31,455.18 and 6,179.94 is: 9,269.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.26 : 31,455.18 = 6,179.94 : x
  2. Step 2: Convert to fraction form
    20,971.26/31,455.18 = 6,179.94/x
  3. Step 3: Cross multiply
    20,971.26x = 31,455.18 × 6,179.94
  4. Step 4: Simplify right side
    20,971.26x = 194,391,125.09
  5. Step 5: Solve for x
    x = 194,391,125.09/20,971.26
  6. Step 6: Final answer
    x = 9,269.41

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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.