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Finding the Fourth Proportional to 18,004.10, 26,998.05 and 8,138.30

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Solution

The fourth proportional to 18,004.10, 26,998.05 and 8,138.30 is: 12,203.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,004.10 : 26,998.05 = 8,138.30 : x
  2. Step 2: Convert to fraction form
    18,004.10/26,998.05 = 8,138.30/x
  3. Step 3: Cross multiply
    18,004.10x = 26,998.05 × 8,138.30
  4. Step 4: Simplify right side
    18,004.10x = 219,718,230.32
  5. Step 5: Solve for x
    x = 219,718,230.32/18,004.10
  6. Step 6: Final answer
    x = 12,203.79

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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.