Home / 11,869.47-16,379.37-6,491.82

Finding the Fourth Proportional to 11,869.47, 16,379.37 and 6,491.82

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Solution

The fourth proportional to 11,869.47, 16,379.37 and 6,491.82 is: 8,958.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.47 : 16,379.37 = 6,491.82 : x
  2. Step 2: Convert to fraction form
    11,869.47/16,379.37 = 6,491.82/x
  3. Step 3: Cross multiply
    11,869.47x = 16,379.37 × 6,491.82
  4. Step 4: Simplify right side
    11,869.47x = 106,331,839.86
  5. Step 5: Solve for x
    x = 106,331,839.86/11,869.47
  6. Step 6: Final answer
    x = 8,958.44

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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.