Home / 13,144.23-18,138.60-7,836.30

Finding the Fourth Proportional to 13,144.23, 18,138.60 and 7,836.30

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Solution

The fourth proportional to 13,144.23, 18,138.60 and 7,836.30 is: 10,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.23 : 18,138.60 = 7,836.30 : x
  2. Step 2: Convert to fraction form
    13,144.23/18,138.60 = 7,836.30/x
  3. Step 3: Cross multiply
    13,144.23x = 18,138.60 × 7,836.30
  4. Step 4: Simplify right side
    13,144.23x = 142,139,511.18
  5. Step 5: Solve for x
    x = 142,139,511.18/13,144.23
  6. Step 6: Final answer
    x = 10,813.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.