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Finding the Fourth Proportional to 18,880.70, 28,333.20 and 10,983.20

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Solution

The fourth proportional to 18,880.70, 28,333.20 and 10,983.20 is: 16,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.70 : 28,333.20 = 10,983.20 : x
  2. Step 2: Convert to fraction form
    18,880.70/28,333.20 = 10,983.20/x
  3. Step 3: Cross multiply
    18,880.70x = 28,333.20 × 10,983.20
  4. Step 4: Simplify right side
    18,880.70x = 311,189,202.24
  5. Step 5: Solve for x
    x = 311,189,202.24/18,880.70
  6. Step 6: Final answer
    x = 16,481.87

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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.