Home / 27,979.20-41,936.40-11,328.30

Finding the Fourth Proportional to 27,979.20, 41,936.40 and 11,328.30

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Solution

The fourth proportional to 27,979.20, 41,936.40 and 11,328.30 is: 16,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,979.20 : 41,936.40 = 11,328.30 : x
  2. Step 2: Convert to fraction form
    27,979.20/41,936.40 = 11,328.30/x
  3. Step 3: Cross multiply
    27,979.20x = 41,936.40 × 11,328.30
  4. Step 4: Simplify right side
    27,979.20x = 475,068,120.12
  5. Step 5: Solve for x
    x = 475,068,120.12/27,979.20
  6. Step 6: Final answer
    x = 16,979.33

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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.