Home / 13,173.52-18,168.96-11,190.64

Finding the Fourth Proportional to 13,173.52, 18,168.96 and 11,190.64

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Solution

The fourth proportional to 13,173.52, 18,168.96 and 11,190.64 is: 15,434.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.52 : 18,168.96 = 11,190.64 : x
  2. Step 2: Convert to fraction form
    13,173.52/18,168.96 = 11,190.64/x
  3. Step 3: Cross multiply
    13,173.52x = 18,168.96 × 11,190.64
  4. Step 4: Simplify right side
    13,173.52x = 203,322,290.53
  5. Step 5: Solve for x
    x = 203,322,290.53/13,173.52
  6. Step 6: Final answer
    x = 15,434.17

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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.