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Finding the Fourth Proportional to 18,682.08, 28,020.48 and 5,531.04

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Solution

The fourth proportional to 18,682.08, 28,020.48 and 5,531.04 is: 8,295.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.08 : 28,020.48 = 5,531.04 : x
  2. Step 2: Convert to fraction form
    18,682.08/28,020.48 = 5,531.04/x
  3. Step 3: Cross multiply
    18,682.08x = 28,020.48 × 5,531.04
  4. Step 4: Simplify right side
    18,682.08x = 154,982,395.70
  5. Step 5: Solve for x
    x = 154,982,395.70/18,682.08
  6. Step 6: Final answer
    x = 8,295.78

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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.