Home / 11,239.38-16,850.75-5,390.42

Finding the Fourth Proportional to 11,239.38, 16,850.75 and 5,390.42

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Solution

The fourth proportional to 11,239.38, 16,850.75 and 5,390.42 is: 8,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.38 : 16,850.75 = 5,390.42 : x
  2. Step 2: Convert to fraction form
    11,239.38/16,850.75 = 5,390.42/x
  3. Step 3: Cross multiply
    11,239.38x = 16,850.75 × 5,390.42
  4. Step 4: Simplify right side
    11,239.38x = 90,832,619.82
  5. Step 5: Solve for x
    x = 90,832,619.82/11,239.38
  6. Step 6: Final answer
    x = 8,081.64

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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.