Home / 11,620.56-17,398.44-7,719.60

Finding the Fourth Proportional to 11,620.56, 17,398.44 and 7,719.60

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Solution

The fourth proportional to 11,620.56, 17,398.44 and 7,719.60 is: 11,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.56 : 17,398.44 = 7,719.60 : x
  2. Step 2: Convert to fraction form
    11,620.56/17,398.44 = 7,719.60/x
  3. Step 3: Cross multiply
    11,620.56x = 17,398.44 × 7,719.60
  4. Step 4: Simplify right side
    11,620.56x = 134,308,997.42
  5. Step 5: Solve for x
    x = 134,308,997.42/11,620.56
  6. Step 6: Final answer
    x = 11,557.88

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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.