Home / 12,109.26-18,163.89-4,316.25

Finding the Fourth Proportional to 12,109.26, 18,163.89 and 4,316.25

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Solution

The fourth proportional to 12,109.26, 18,163.89 and 4,316.25 is: 6,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.26 : 18,163.89 = 4,316.25 : x
  2. Step 2: Convert to fraction form
    12,109.26/18,163.89 = 4,316.25/x
  3. Step 3: Cross multiply
    12,109.26x = 18,163.89 × 4,316.25
  4. Step 4: Simplify right side
    12,109.26x = 78,399,890.21
  5. Step 5: Solve for x
    x = 78,399,890.21/12,109.26
  6. Step 6: Final answer
    x = 6,474.38

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Similar ratio
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1.5x scale

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.