Home / 11,318.86-15,620.61-8,519.50

Finding the Fourth Proportional to 11,318.86, 15,620.61 and 8,519.50

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Solution

The fourth proportional to 11,318.86, 15,620.61 and 8,519.50 is: 11,757.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.86 : 15,620.61 = 8,519.50 : x
  2. Step 2: Convert to fraction form
    11,318.86/15,620.61 = 8,519.50/x
  3. Step 3: Cross multiply
    11,318.86x = 15,620.61 × 8,519.50
  4. Step 4: Simplify right side
    11,318.86x = 133,079,786.90
  5. Step 5: Solve for x
    x = 133,079,786.90/11,318.86
  6. Step 6: Final answer
    x = 11,757.35

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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.