Home / 12,168.36-18,241.56-5,591.16

Finding the Fourth Proportional to 12,168.36, 18,241.56 and 5,591.16

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Solution

The fourth proportional to 12,168.36, 18,241.56 and 5,591.16 is: 8,381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.36 : 18,241.56 = 5,591.16 : x
  2. Step 2: Convert to fraction form
    12,168.36/18,241.56 = 5,591.16/x
  3. Step 3: Cross multiply
    12,168.36x = 18,241.56 × 5,591.16
  4. Step 4: Simplify right side
    12,168.36x = 101,991,480.61
  5. Step 5: Solve for x
    x = 101,991,480.61/12,168.36
  6. Step 6: Final answer
    x = 8,381.69

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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.