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Finding the Fourth Proportional to 26,874.21, 40,311.27 and 8,406.21

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Solution

The fourth proportional to 26,874.21, 40,311.27 and 8,406.21 is: 12,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,874.21 : 40,311.27 = 8,406.21 : x
  2. Step 2: Convert to fraction form
    26,874.21/40,311.27 = 8,406.21/x
  3. Step 3: Cross multiply
    26,874.21x = 40,311.27 × 8,406.21
  4. Step 4: Simplify right side
    26,874.21x = 338,865,000.99
  5. Step 5: Solve for x
    x = 338,865,000.99/26,874.21
  6. Step 6: Final answer
    x = 12,609.30

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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.