Home / 18,785.72-28,178.89-6,305.85

Finding the Fourth Proportional to 18,785.72, 28,178.89 and 6,305.85

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Solution

The fourth proportional to 18,785.72, 28,178.89 and 6,305.85 is: 9,458.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.72 : 28,178.89 = 6,305.85 : x
  2. Step 2: Convert to fraction form
    18,785.72/28,178.89 = 6,305.85/x
  3. Step 3: Cross multiply
    18,785.72x = 28,178.89 × 6,305.85
  4. Step 4: Simplify right side
    18,785.72x = 177,691,837.74
  5. Step 5: Solve for x
    x = 177,691,837.74/18,785.72
  6. Step 6: Final answer
    x = 9,458.88

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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.