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Finding the Fourth Proportional to 26,859.09, 40,288.64 and 8,391.09

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Solution

The fourth proportional to 26,859.09, 40,288.64 and 8,391.09 is: 12,586.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,859.09 : 40,288.64 = 8,391.09 : x
  2. Step 2: Convert to fraction form
    26,859.09/40,288.64 = 8,391.09/x
  3. Step 3: Cross multiply
    26,859.09x = 40,288.64 × 8,391.09
  4. Step 4: Simplify right side
    26,859.09x = 338,065,760.54
  5. Step 5: Solve for x
    x = 338,065,760.54/26,859.09
  6. Step 6: Final answer
    x = 12,586.64

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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.