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Finding the Fourth Proportional to 26,879.43, 40,306.09 and 8,156.08

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Solution

The fourth proportional to 26,879.43, 40,306.09 and 8,156.08 is: 12,230.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,879.43 : 40,306.09 = 8,156.08 : x
  2. Step 2: Convert to fraction form
    26,879.43/40,306.09 = 8,156.08/x
  3. Step 3: Cross multiply
    26,879.43x = 40,306.09 × 8,156.08
  4. Step 4: Simplify right side
    26,879.43x = 328,739,694.53
  5. Step 5: Solve for x
    x = 328,739,694.53/26,879.43
  6. Step 6: Final answer
    x = 12,230.16

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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.