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Finding the Fourth Proportional to 18,502.43, 27,755.39 and 5,175.42

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Solution

The fourth proportional to 18,502.43, 27,755.39 and 5,175.42 is: 7,763.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,502.43 : 27,755.39 = 5,175.42 : x
  2. Step 2: Convert to fraction form
    18,502.43/27,755.39 = 5,175.42/x
  3. Step 3: Cross multiply
    18,502.43x = 27,755.39 × 5,175.42
  4. Step 4: Simplify right side
    18,502.43x = 143,645,800.51
  5. Step 5: Solve for x
    x = 143,645,800.51/18,502.43
  6. Step 6: Final answer
    x = 7,763.62

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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.