Home / 10,982.80-16,471.09-5,439.43

Finding the Fourth Proportional to 10,982.80, 16,471.09 and 5,439.43

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Solution

The fourth proportional to 10,982.80, 16,471.09 and 5,439.43 is: 8,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,982.80 : 16,471.09 = 5,439.43 : x
  2. Step 2: Convert to fraction form
    10,982.80/16,471.09 = 5,439.43/x
  3. Step 3: Cross multiply
    10,982.80x = 16,471.09 × 5,439.43
  4. Step 4: Simplify right side
    10,982.80x = 89,593,341.08
  5. Step 5: Solve for x
    x = 89,593,341.08/10,982.80
  6. Step 6: Final answer
    x = 8,157.60

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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.