Home / 20,481.16-30,721.72-6,442.42

Finding the Fourth Proportional to 20,481.16, 30,721.72 and 6,442.42

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Solution

The fourth proportional to 20,481.16, 30,721.72 and 6,442.42 is: 9,663.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.16 : 30,721.72 = 6,442.42 : x
  2. Step 2: Convert to fraction form
    20,481.16/30,721.72 = 6,442.42/x
  3. Step 3: Cross multiply
    20,481.16x = 30,721.72 × 6,442.42
  4. Step 4: Simplify right side
    20,481.16x = 197,922,223.36
  5. Step 5: Solve for x
    x = 197,922,223.36/20,481.16
  6. Step 6: Final answer
    x = 9,663.62

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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.