Home / 10,481.10-15,721.20-3,555.60

Finding the Fourth Proportional to 10,481.10, 15,721.20 and 3,555.60

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Solution

The fourth proportional to 10,481.10, 15,721.20 and 3,555.60 is: 5,333.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,481.10 : 15,721.20 = 3,555.60 : x
  2. Step 2: Convert to fraction form
    10,481.10/15,721.20 = 3,555.60/x
  3. Step 3: Cross multiply
    10,481.10x = 15,721.20 × 3,555.60
  4. Step 4: Simplify right side
    10,481.10x = 55,898,298.72
  5. Step 5: Solve for x
    x = 55,898,298.72/10,481.10
  6. Step 6: Final answer
    x = 5,333.25

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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.