Home / 27,981.20-41,939.40-11,330.30

Finding the Fourth Proportional to 27,981.20, 41,939.40 and 11,330.30

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Solution

The fourth proportional to 27,981.20, 41,939.40 and 11,330.30 is: 16,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.20 : 41,939.40 = 11,330.30 : x
  2. Step 2: Convert to fraction form
    27,981.20/41,939.40 = 11,330.30/x
  3. Step 3: Cross multiply
    27,981.20x = 41,939.40 × 11,330.30
  4. Step 4: Simplify right side
    27,981.20x = 475,185,983.82
  5. Step 5: Solve for x
    x = 475,185,983.82/27,981.20
  6. Step 6: Final answer
    x = 16,982.33

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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.