Home / 13,882.20-20,825.10-6,865.80

Finding the Fourth Proportional to 13,882.20, 20,825.10 and 6,865.80

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Solution

The fourth proportional to 13,882.20, 20,825.10 and 6,865.80 is: 10,299.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.20 : 20,825.10 = 6,865.80 : x
  2. Step 2: Convert to fraction form
    13,882.20/20,825.10 = 6,865.80/x
  3. Step 3: Cross multiply
    13,882.20x = 20,825.10 × 6,865.80
  4. Step 4: Simplify right side
    13,882.20x = 142,980,971.58
  5. Step 5: Solve for x
    x = 142,980,971.58/13,882.20
  6. Step 6: Final answer
    x = 10,299.59

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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.