Home / 13,830.20-20,736.92-5,511.48

Finding the Fourth Proportional to 13,830.20, 20,736.92 and 5,511.48

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Solution

The fourth proportional to 13,830.20, 20,736.92 and 5,511.48 is: 8,263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.20 : 20,736.92 = 5,511.48 : x
  2. Step 2: Convert to fraction form
    13,830.20/20,736.92 = 5,511.48/x
  3. Step 3: Cross multiply
    13,830.20x = 20,736.92 × 5,511.48
  4. Step 4: Simplify right side
    13,830.20x = 114,291,119.84
  5. Step 5: Solve for x
    x = 114,291,119.84/13,830.20
  6. Step 6: Final answer
    x = 8,263.88

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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.