Home / 11,992.55-17,990.33-6,438.26

Finding the Fourth Proportional to 11,992.55, 17,990.33 and 6,438.26

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Solution

The fourth proportional to 11,992.55, 17,990.33 and 6,438.26 is: 9,658.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,992.55 : 17,990.33 = 6,438.26 : x
  2. Step 2: Convert to fraction form
    11,992.55/17,990.33 = 6,438.26/x
  3. Step 3: Cross multiply
    11,992.55x = 17,990.33 × 6,438.26
  4. Step 4: Simplify right side
    11,992.55x = 115,826,299.88
  5. Step 5: Solve for x
    x = 115,826,299.88/11,992.55
  6. Step 6: Final answer
    x = 9,658.19

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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.