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Finding the Fourth Proportional to 18,628.77, 27,943.16 and 5,481.14

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Solution

The fourth proportional to 18,628.77, 27,943.16 and 5,481.14 is: 8,221.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.77 : 27,943.16 = 5,481.14 : x
  2. Step 2: Convert to fraction form
    18,628.77/27,943.16 = 5,481.14/x
  3. Step 3: Cross multiply
    18,628.77x = 27,943.16 × 5,481.14
  4. Step 4: Simplify right side
    18,628.77x = 153,160,372.00
  5. Step 5: Solve for x
    x = 153,160,372.00/18,628.77
  6. Step 6: Final answer
    x = 8,221.71

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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.