Home / 18,275.88-25,221.20-11,103.36

Finding the Fourth Proportional to 18,275.88, 25,221.20 and 11,103.36

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Solution

The fourth proportional to 18,275.88, 25,221.20 and 11,103.36 is: 15,322.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.88 : 25,221.20 = 11,103.36 : x
  2. Step 2: Convert to fraction form
    18,275.88/25,221.20 = 11,103.36/x
  3. Step 3: Cross multiply
    18,275.88x = 25,221.20 × 11,103.36
  4. Step 4: Simplify right side
    18,275.88x = 280,040,063.23
  5. Step 5: Solve for x
    x = 280,040,063.23/18,275.88
  6. Step 6: Final answer
    x = 15,322.93

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Double scale
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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.