Home / 13,481.91-20,222.80-3,620.36

Finding the Fourth Proportional to 13,481.91, 20,222.80 and 3,620.36

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Solution

The fourth proportional to 13,481.91, 20,222.80 and 3,620.36 is: 5,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.91 : 20,222.80 = 3,620.36 : x
  2. Step 2: Convert to fraction form
    13,481.91/20,222.80 = 3,620.36/x
  3. Step 3: Cross multiply
    13,481.91x = 20,222.80 × 3,620.36
  4. Step 4: Simplify right side
    13,481.91x = 73,213,857.71
  5. Step 5: Solve for x
    x = 73,213,857.71/13,481.91
  6. Step 6: Final answer
    x = 5,430.53

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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.