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Finding the Fourth Proportional to 18,506.65, 27,761.73 and 5,179.65

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Solution

The fourth proportional to 18,506.65, 27,761.73 and 5,179.65 is: 7,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.65 : 27,761.73 = 5,179.65 : x
  2. Step 2: Convert to fraction form
    18,506.65/27,761.73 = 5,179.65/x
  3. Step 3: Cross multiply
    18,506.65x = 27,761.73 × 5,179.65
  4. Step 4: Simplify right side
    18,506.65x = 143,796,044.79
  5. Step 5: Solve for x
    x = 143,796,044.79/18,506.65
  6. Step 6: Final answer
    x = 7,769.97

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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.