Home / 12,112.26-18,168.39-4,319.25

Finding the Fourth Proportional to 12,112.26, 18,168.39 and 4,319.25

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Solution

The fourth proportional to 12,112.26, 18,168.39 and 4,319.25 is: 6,478.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.26 : 18,168.39 = 4,319.25 : x
  2. Step 2: Convert to fraction form
    12,112.26/18,168.39 = 4,319.25/x
  3. Step 3: Cross multiply
    12,112.26x = 18,168.39 × 4,319.25
  4. Step 4: Simplify right side
    12,112.26x = 78,473,818.51
  5. Step 5: Solve for x
    x = 78,473,818.51/12,112.26
  6. Step 6: Final answer
    x = 6,478.88

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Double scale
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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.