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Finding the Fourth Proportional to 18,634.59, 27,951.93 and 5,487.12

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Solution

The fourth proportional to 18,634.59, 27,951.93 and 5,487.12 is: 8,230.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,634.59 : 27,951.93 = 5,487.12 : x
  2. Step 2: Convert to fraction form
    18,634.59/27,951.93 = 5,487.12/x
  3. Step 3: Cross multiply
    18,634.59x = 27,951.93 × 5,487.12
  4. Step 4: Simplify right side
    18,634.59x = 153,375,594.14
  5. Step 5: Solve for x
    x = 153,375,594.14/18,634.59
  6. Step 6: Final answer
    x = 8,230.69

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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.