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Finding the Fourth Proportional to 20,571.84, 30,863.16 and 8,882.28

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Solution

The fourth proportional to 20,571.84, 30,863.16 and 8,882.28 is: 13,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.84 : 30,863.16 = 8,882.28 : x
  2. Step 2: Convert to fraction form
    20,571.84/30,863.16 = 8,882.28/x
  3. Step 3: Cross multiply
    20,571.84x = 30,863.16 × 8,882.28
  4. Step 4: Simplify right side
    20,571.84x = 274,135,228.80
  5. Step 5: Solve for x
    x = 274,135,228.80/20,571.84
  6. Step 6: Final answer
    x = 13,325.75

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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.