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Finding the Fourth Proportional to 18,266.10, 27,391.05 and 8,408.40

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Solution

The fourth proportional to 18,266.10, 27,391.05 and 8,408.40 is: 12,608.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266.10 : 27,391.05 = 8,408.40 : x
  2. Step 2: Convert to fraction form
    18,266.10/27,391.05 = 8,408.40/x
  3. Step 3: Cross multiply
    18,266.10x = 27,391.05 × 8,408.40
  4. Step 4: Simplify right side
    18,266.10x = 230,314,904.82
  5. Step 5: Solve for x
    x = 230,314,904.82/18,266.10
  6. Step 6: Final answer
    x = 12,608.87

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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.