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Finding the Fourth Proportional to 18,179.76, 27,282.20 and 11,942.76

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Solution

The fourth proportional to 18,179.76, 27,282.20 and 11,942.76 is: 17,922.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,179.76 : 27,282.20 = 11,942.76 : x
  2. Step 2: Convert to fraction form
    18,179.76/27,282.20 = 11,942.76/x
  3. Step 3: Cross multiply
    18,179.76x = 27,282.20 × 11,942.76
  4. Step 4: Simplify right side
    18,179.76x = 325,824,707.16
  5. Step 5: Solve for x
    x = 325,824,707.16/18,179.76
  6. Step 6: Final answer
    x = 17,922.39

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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.