Home / 11,979.91-17,982.42-5,745.21

Finding the Fourth Proportional to 11,979.91, 17,982.42 and 5,745.21

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Solution

The fourth proportional to 11,979.91, 17,982.42 and 5,745.21 is: 8,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.91 : 17,982.42 = 5,745.21 : x
  2. Step 2: Convert to fraction form
    11,979.91/17,982.42 = 5,745.21/x
  3. Step 3: Cross multiply
    11,979.91x = 17,982.42 × 5,745.21
  4. Step 4: Simplify right side
    11,979.91x = 103,312,779.21
  5. Step 5: Solve for x
    x = 103,312,779.21/11,979.91
  6. Step 6: Final answer
    x = 8,623.84

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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.