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Finding the Fourth Proportional to 26,936.40, 40,406.94 and 8,220.65

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Solution

The fourth proportional to 26,936.40, 40,406.94 and 8,220.65 is: 12,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,936.40 : 40,406.94 = 8,220.65 : x
  2. Step 2: Convert to fraction form
    26,936.40/40,406.94 = 8,220.65/x
  3. Step 3: Cross multiply
    26,936.40x = 40,406.94 × 8,220.65
  4. Step 4: Simplify right side
    26,936.40x = 332,171,412.33
  5. Step 5: Solve for x
    x = 332,171,412.33/26,936.40
  6. Step 6: Final answer
    x = 12,331.69

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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.