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Finding the Fourth Proportional to 18,627.20, 27,934.86 and 6,144.90

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Solution

The fourth proportional to 18,627.20, 27,934.86 and 6,144.90 is: 9,215.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.20 : 27,934.86 = 6,144.90 : x
  2. Step 2: Convert to fraction form
    18,627.20/27,934.86 = 6,144.90/x
  3. Step 3: Cross multiply
    18,627.20x = 27,934.86 × 6,144.90
  4. Step 4: Simplify right side
    18,627.20x = 171,656,921.21
  5. Step 5: Solve for x
    x = 171,656,921.21/18,627.20
  6. Step 6: Final answer
    x = 9,215.39

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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.