Home / 18,138.48-27,207.84-4,992.24

Finding the Fourth Proportional to 18,138.48, 27,207.84 and 4,992.24

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Solution

The fourth proportional to 18,138.48, 27,207.84 and 4,992.24 is: 7,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.48 : 27,207.84 = 4,992.24 : x
  2. Step 2: Convert to fraction form
    18,138.48/27,207.84 = 4,992.24/x
  3. Step 3: Cross multiply
    18,138.48x = 27,207.84 × 4,992.24
  4. Step 4: Simplify right side
    18,138.48x = 135,828,067.16
  5. Step 5: Solve for x
    x = 135,828,067.16/18,138.48
  6. Step 6: Final answer
    x = 7,488.39

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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.