Home / 11,420.31-17,105.88-5,564.64

Finding the Fourth Proportional to 11,420.31, 17,105.88 and 5,564.64

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Solution

The fourth proportional to 11,420.31, 17,105.88 and 5,564.64 is: 8,334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.31 : 17,105.88 = 5,564.64 : x
  2. Step 2: Convert to fraction form
    11,420.31/17,105.88 = 5,564.64/x
  3. Step 3: Cross multiply
    11,420.31x = 17,105.88 × 5,564.64
  4. Step 4: Simplify right side
    11,420.31x = 95,188,064.08
  5. Step 5: Solve for x
    x = 95,188,064.08/11,420.31
  6. Step 6: Final answer
    x = 8,334.98

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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.