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Finding the Fourth Proportional to 18,627.57, 27,921.92 and 7,529.76

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Solution

The fourth proportional to 18,627.57, 27,921.92 and 7,529.76 is: 11,286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.57 : 27,921.92 = 7,529.76 : x
  2. Step 2: Convert to fraction form
    18,627.57/27,921.92 = 7,529.76/x
  3. Step 3: Cross multiply
    18,627.57x = 27,921.92 × 7,529.76
  4. Step 4: Simplify right side
    18,627.57x = 210,245,318.69
  5. Step 5: Solve for x
    x = 210,245,318.69/18,627.57
  6. Step 6: Final answer
    x = 11,286.78

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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.