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Finding the Fourth Proportional to 18,612.82, 27,920.30 and 5,963.69

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Solution

The fourth proportional to 18,612.82, 27,920.30 and 5,963.69 is: 8,945.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.82 : 27,920.30 = 5,963.69 : x
  2. Step 2: Convert to fraction form
    18,612.82/27,920.30 = 5,963.69/x
  3. Step 3: Cross multiply
    18,612.82x = 27,920.30 × 5,963.69
  4. Step 4: Simplify right side
    18,612.82x = 166,508,053.89
  5. Step 5: Solve for x
    x = 166,508,053.89/18,612.82
  6. Step 6: Final answer
    x = 8,945.88

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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.