Home / 13,481.32-20,208.30-5,159.20

Finding the Fourth Proportional to 13,481.32, 20,208.30 and 5,159.20

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Solution

The fourth proportional to 13,481.32, 20,208.30 and 5,159.20 is: 7,733.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.32 : 20,208.30 = 5,159.20 : x
  2. Step 2: Convert to fraction form
    13,481.32/20,208.30 = 5,159.20/x
  3. Step 3: Cross multiply
    13,481.32x = 20,208.30 × 5,159.20
  4. Step 4: Simplify right side
    13,481.32x = 104,258,661.36
  5. Step 5: Solve for x
    x = 104,258,661.36/13,481.32
  6. Step 6: Final answer
    x = 7,733.56

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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.