Home / 20,734.88-31,085.28-8,249.54

Finding the Fourth Proportional to 20,734.88, 31,085.28 and 8,249.54

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Solution

The fourth proportional to 20,734.88, 31,085.28 and 8,249.54 is: 12,367.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.88 : 31,085.28 = 8,249.54 : x
  2. Step 2: Convert to fraction form
    20,734.88/31,085.28 = 8,249.54/x
  3. Step 3: Cross multiply
    20,734.88x = 31,085.28 × 8,249.54
  4. Step 4: Simplify right side
    20,734.88x = 256,439,260.77
  5. Step 5: Solve for x
    x = 256,439,260.77/20,734.88
  6. Step 6: Final answer
    x = 12,367.53

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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.