Home / 11,365.11-15,679.42-8,379.86

Finding the Fourth Proportional to 11,365.11, 15,679.42 and 8,379.86

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Solution

The fourth proportional to 11,365.11, 15,679.42 and 8,379.86 is: 11,560.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,365.11 : 15,679.42 = 8,379.86 : x
  2. Step 2: Convert to fraction form
    11,365.11/15,679.42 = 8,379.86/x
  3. Step 3: Cross multiply
    11,365.11x = 15,679.42 × 8,379.86
  4. Step 4: Simplify right side
    11,365.11x = 131,391,292.27
  5. Step 5: Solve for x
    x = 131,391,292.27/11,365.11
  6. Step 6: Final answer
    x = 11,560.93

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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.