Home / 11,164.38-15,405.09-6,447.75

Finding the Fourth Proportional to 11,164.38, 15,405.09 and 6,447.75

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Solution

The fourth proportional to 11,164.38, 15,405.09 and 6,447.75 is: 8,896.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,164.38 : 15,405.09 = 6,447.75 : x
  2. Step 2: Convert to fraction form
    11,164.38/15,405.09 = 6,447.75/x
  3. Step 3: Cross multiply
    11,164.38x = 15,405.09 × 6,447.75
  4. Step 4: Simplify right side
    11,164.38x = 99,328,169.05
  5. Step 5: Solve for x
    x = 99,328,169.05/11,164.38
  6. Step 6: Final answer
    x = 8,896.88

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.