Home / 10,481.78-15,719.76-4,155.62

Finding the Fourth Proportional to 10,481.78, 15,719.76 and 4,155.62

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Solution

The fourth proportional to 10,481.78, 15,719.76 and 4,155.62 is: 6,232.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,481.78 : 15,719.76 = 4,155.62 : x
  2. Step 2: Convert to fraction form
    10,481.78/15,719.76 = 4,155.62/x
  3. Step 3: Cross multiply
    10,481.78x = 15,719.76 × 4,155.62
  4. Step 4: Simplify right side
    10,481.78x = 65,325,349.05
  5. Step 5: Solve for x
    x = 65,325,349.05/10,481.78
  6. Step 6: Final answer
    x = 6,232.28

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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.