Home / 10,982.80-16,474.20-5,143.52

Finding the Fourth Proportional to 10,982.80, 16,474.20 and 5,143.52

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Solution

The fourth proportional to 10,982.80, 16,474.20 and 5,143.52 is: 7,715.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,982.80 : 16,474.20 = 5,143.52 : x
  2. Step 2: Convert to fraction form
    10,982.80/16,474.20 = 5,143.52/x
  3. Step 3: Cross multiply
    10,982.80x = 16,474.20 × 5,143.52
  4. Step 4: Simplify right side
    10,982.80x = 84,735,377.18
  5. Step 5: Solve for x
    x = 84,735,377.18/10,982.80
  6. Step 6: Final answer
    x = 7,715.28

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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.