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Finding the Fourth Proportional to 18,177.81, 27,260.91 and 7,081.80

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Solution

The fourth proportional to 18,177.81, 27,260.91 and 7,081.80 is: 10,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,177.81 : 27,260.91 = 7,081.80 : x
  2. Step 2: Convert to fraction form
    18,177.81/27,260.91 = 7,081.80/x
  3. Step 3: Cross multiply
    18,177.81x = 27,260.91 × 7,081.80
  4. Step 4: Simplify right side
    18,177.81x = 193,056,312.44
  5. Step 5: Solve for x
    x = 193,056,312.44/18,177.81
  6. Step 6: Final answer
    x = 10,620.44

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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.