Home / 18,205.11-25,110.56-11,135.03

Finding the Fourth Proportional to 18,205.11, 25,110.56 and 11,135.03

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Solution

The fourth proportional to 18,205.11, 25,110.56 and 11,135.03 is: 15,358.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.11 : 25,110.56 = 11,135.03 : x
  2. Step 2: Convert to fraction form
    18,205.11/25,110.56 = 11,135.03/x
  3. Step 3: Cross multiply
    18,205.11x = 25,110.56 × 11,135.03
  4. Step 4: Simplify right side
    18,205.11x = 279,606,657.69
  5. Step 5: Solve for x
    x = 279,606,657.69/18,205.11
  6. Step 6: Final answer
    x = 15,358.69

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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.