Home / 10,789.38-16,179.66-4,128.36

Finding the Fourth Proportional to 10,789.38, 16,179.66 and 4,128.36

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Solution

The fourth proportional to 10,789.38, 16,179.66 and 4,128.36 is: 6,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,789.38 : 16,179.66 = 4,128.36 : x
  2. Step 2: Convert to fraction form
    10,789.38/16,179.66 = 4,128.36/x
  3. Step 3: Cross multiply
    10,789.38x = 16,179.66 × 4,128.36
  4. Step 4: Simplify right side
    10,789.38x = 66,795,461.16
  5. Step 5: Solve for x
    x = 66,795,461.16/10,789.38
  6. Step 6: Final answer
    x = 6,190.85

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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.