Home / 13,167.26-18,171.11-7,861.09

Finding the Fourth Proportional to 13,167.26, 18,171.11 and 7,861.09

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Solution

The fourth proportional to 13,167.26, 18,171.11 and 7,861.09 is: 10,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.26 : 18,171.11 = 7,861.09 : x
  2. Step 2: Convert to fraction form
    13,167.26/18,171.11 = 7,861.09/x
  3. Step 3: Cross multiply
    13,167.26x = 18,171.11 × 7,861.09
  4. Step 4: Simplify right side
    13,167.26x = 142,844,731.11
  5. Step 5: Solve for x
    x = 142,844,731.11/13,167.26
  6. Step 6: Final answer
    x = 10,848.48

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1.5x scale

Why These Related Problems?

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