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Finding the Fourth Proportional to 26,921.84, 40,382.78 and 8,453.84

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Solution

The fourth proportional to 26,921.84, 40,382.78 and 8,453.84 is: 12,680.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,921.84 : 40,382.78 = 8,453.84 : x
  2. Step 2: Convert to fraction form
    26,921.84/40,382.78 = 8,453.84/x
  3. Step 3: Cross multiply
    26,921.84x = 40,382.78 × 8,453.84
  4. Step 4: Simplify right side
    26,921.84x = 341,389,316.69
  5. Step 5: Solve for x
    x = 341,389,316.69/26,921.84
  6. Step 6: Final answer
    x = 12,680.76

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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.