Home / 21,229.77-31,850.12-8,074.97

Finding the Fourth Proportional to 21,229.77, 31,850.12 and 8,074.97

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Solution

The fourth proportional to 21,229.77, 31,850.12 and 8,074.97 is: 12,114.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.77 : 31,850.12 = 8,074.97 : x
  2. Step 2: Convert to fraction form
    21,229.77/31,850.12 = 8,074.97/x
  3. Step 3: Cross multiply
    21,229.77x = 31,850.12 × 8,074.97
  4. Step 4: Simplify right side
    21,229.77x = 257,188,665.65
  5. Step 5: Solve for x
    x = 257,188,665.65/21,229.77
  6. Step 6: Final answer
    x = 12,114.53

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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.