Home / 20,823.76-31,229.10-6,969.52

Finding the Fourth Proportional to 20,823.76, 31,229.10 and 6,969.52

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Solution

The fourth proportional to 20,823.76, 31,229.10 and 6,969.52 is: 10,452.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.76 : 31,229.10 = 6,969.52 : x
  2. Step 2: Convert to fraction form
    20,823.76/31,229.10 = 6,969.52/x
  3. Step 3: Cross multiply
    20,823.76x = 31,229.10 × 6,969.52
  4. Step 4: Simplify right side
    20,823.76x = 217,651,837.03
  5. Step 5: Solve for x
    x = 217,651,837.03/20,823.76
  6. Step 6: Final answer
    x = 10,452.09

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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.