Home / 20,930.83-31,396.14-5,348.45

Finding the Fourth Proportional to 20,930.83, 31,396.14 and 5,348.45

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Solution

The fourth proportional to 20,930.83, 31,396.14 and 5,348.45 is: 8,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.83 : 31,396.14 = 5,348.45 : x
  2. Step 2: Convert to fraction form
    20,930.83/31,396.14 = 5,348.45/x
  3. Step 3: Cross multiply
    20,930.83x = 31,396.14 × 5,348.45
  4. Step 4: Simplify right side
    20,930.83x = 167,920,763.47
  5. Step 5: Solve for x
    x = 167,920,763.47/20,930.83
  6. Step 6: Final answer
    x = 8,022.65

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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.