Home / 13,481.43-20,221.20-5,689.50

Finding the Fourth Proportional to 13,481.43, 20,221.20 and 5,689.50

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Solution

The fourth proportional to 13,481.43, 20,221.20 and 5,689.50 is: 8,533.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.43 : 20,221.20 = 5,689.50 : x
  2. Step 2: Convert to fraction form
    13,481.43/20,221.20 = 5,689.50/x
  3. Step 3: Cross multiply
    13,481.43x = 20,221.20 × 5,689.50
  4. Step 4: Simplify right side
    13,481.43x = 115,048,517.40
  5. Step 5: Solve for x
    x = 115,048,517.40/13,481.43
  6. Step 6: Final answer
    x = 8,533.85

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1.5x scale

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.