Home / 18,712.26-28,067.58-7,618.50

Finding the Fourth Proportional to 18,712.26, 28,067.58 and 7,618.50

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Solution

The fourth proportional to 18,712.26, 28,067.58 and 7,618.50 is: 11,427.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.26 : 28,067.58 = 7,618.50 : x
  2. Step 2: Convert to fraction form
    18,712.26/28,067.58 = 7,618.50/x
  3. Step 3: Cross multiply
    18,712.26x = 28,067.58 × 7,618.50
  4. Step 4: Simplify right side
    18,712.26x = 213,832,858.23
  5. Step 5: Solve for x
    x = 213,832,858.23/18,712.26
  6. Step 6: Final answer
    x = 11,427.42

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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.