Home / 18,238.68-25,171.28-11,169.80

Finding the Fourth Proportional to 18,238.68, 25,171.28 and 11,169.80

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Solution

The fourth proportional to 18,238.68, 25,171.28 and 11,169.80 is: 15,415.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.68 : 25,171.28 = 11,169.80 : x
  2. Step 2: Convert to fraction form
    18,238.68/25,171.28 = 11,169.80/x
  3. Step 3: Cross multiply
    18,238.68x = 25,171.28 × 11,169.80
  4. Step 4: Simplify right side
    18,238.68x = 281,158,163.34
  5. Step 5: Solve for x
    x = 281,158,163.34/18,238.68
  6. Step 6: Final answer
    x = 15,415.49

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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.