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Finding the Fourth Proportional to 20,324.73, 30,479.51 and 6,993.99

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Solution

The fourth proportional to 20,324.73, 30,479.51 and 6,993.99 is: 10,488.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.73 : 30,479.51 = 6,993.99 : x
  2. Step 2: Convert to fraction form
    20,324.73/30,479.51 = 6,993.99/x
  3. Step 3: Cross multiply
    20,324.73x = 30,479.51 × 6,993.99
  4. Step 4: Simplify right side
    20,324.73x = 213,173,353.17
  5. Step 5: Solve for x
    x = 213,173,353.17/20,324.73
  6. Step 6: Final answer
    x = 10,488.37

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1.5x scale

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.