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Finding the Fourth Proportional to 26,786.92, 40,128.54 and 20,600.68

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Solution

The fourth proportional to 26,786.92, 40,128.54 and 20,600.68 is: 30,861.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,786.92 : 40,128.54 = 20,600.68 : x
  2. Step 2: Convert to fraction form
    26,786.92/40,128.54 = 20,600.68/x
  3. Step 3: Cross multiply
    26,786.92x = 40,128.54 × 20,600.68
  4. Step 4: Simplify right side
    26,786.92x = 826,675,211.41
  5. Step 5: Solve for x
    x = 826,675,211.41/26,786.92
  6. Step 6: Final answer
    x = 30,861.15

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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.