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Finding the Fourth Proportional to 27,381.39, 41,079.39 and 8,661.79

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Solution

The fourth proportional to 27,381.39, 41,079.39 and 8,661.79 is: 12,995.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,381.39 : 41,079.39 = 8,661.79 : x
  2. Step 2: Convert to fraction form
    27,381.39/41,079.39 = 8,661.79/x
  3. Step 3: Cross multiply
    27,381.39x = 41,079.39 × 8,661.79
  4. Step 4: Simplify right side
    27,381.39x = 355,821,049.51
  5. Step 5: Solve for x
    x = 355,821,049.51/27,381.39
  6. Step 6: Final answer
    x = 12,995.00

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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.