Home / 20,305.63-30,454.94-5,515.73

Finding the Fourth Proportional to 20,305.63, 30,454.94 and 5,515.73

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Solution

The fourth proportional to 20,305.63, 30,454.94 and 5,515.73 is: 8,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.63 : 30,454.94 = 5,515.73 : x
  2. Step 2: Convert to fraction form
    20,305.63/30,454.94 = 5,515.73/x
  3. Step 3: Cross multiply
    20,305.63x = 30,454.94 × 5,515.73
  4. Step 4: Simplify right side
    20,305.63x = 167,981,316.13
  5. Step 5: Solve for x
    x = 167,981,316.13/20,305.63
  6. Step 6: Final answer
    x = 8,272.65

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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.