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Finding the Fourth Proportional to 27,939.96, 41,900.98 and 9,215.79

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Solution

The fourth proportional to 27,939.96, 41,900.98 and 9,215.79 is: 13,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,939.96 : 41,900.98 = 9,215.79 : x
  2. Step 2: Convert to fraction form
    27,939.96/41,900.98 = 9,215.79/x
  3. Step 3: Cross multiply
    27,939.96x = 41,900.98 × 9,215.79
  4. Step 4: Simplify right side
    27,939.96x = 386,150,632.47
  5. Step 5: Solve for x
    x = 386,150,632.47/27,939.96
  6. Step 6: Final answer
    x = 13,820.73

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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.