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Finding the Fourth Proportional to 18,589.10, 27,874.42 and 6,742.40

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Solution

The fourth proportional to 18,589.10, 27,874.42 and 6,742.40 is: 10,110.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.10 : 27,874.42 = 6,742.40 : x
  2. Step 2: Convert to fraction form
    18,589.10/27,874.42 = 6,742.40/x
  3. Step 3: Cross multiply
    18,589.10x = 27,874.42 × 6,742.40
  4. Step 4: Simplify right side
    18,589.10x = 187,940,489.41
  5. Step 5: Solve for x
    x = 187,940,489.41/18,589.10
  6. Step 6: Final answer
    x = 10,110.25

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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.