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Finding the Fourth Proportional to 18,498.38, 27,759.86 and 6,811.59

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Solution

The fourth proportional to 18,498.38, 27,759.86 and 6,811.59 is: 10,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.38 : 27,759.86 = 6,811.59 : x
  2. Step 2: Convert to fraction form
    18,498.38/27,759.86 = 6,811.59/x
  3. Step 3: Cross multiply
    18,498.38x = 27,759.86 × 6,811.59
  4. Step 4: Simplify right side
    18,498.38x = 189,088,918.68
  5. Step 5: Solve for x
    x = 189,088,918.68/18,498.38
  6. Step 6: Final answer
    x = 10,221.92

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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.