Home / 18,125.75-27,183.40-4,978.55

Finding the Fourth Proportional to 18,125.75, 27,183.40 and 4,978.55

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Solution

The fourth proportional to 18,125.75, 27,183.40 and 4,978.55 is: 7,466.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.75 : 27,183.40 = 4,978.55 : x
  2. Step 2: Convert to fraction form
    18,125.75/27,183.40 = 4,978.55/x
  3. Step 3: Cross multiply
    18,125.75x = 27,183.40 × 4,978.55
  4. Step 4: Simplify right side
    18,125.75x = 135,333,755.26
  5. Step 5: Solve for x
    x = 135,333,755.26/18,125.75
  6. Step 6: Final answer
    x = 7,466.38

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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.