Home / 11,489.13-15,854.49-6,453.81

Finding the Fourth Proportional to 11,489.13, 15,854.49 and 6,453.81

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Solution

The fourth proportional to 11,489.13, 15,854.49 and 6,453.81 is: 8,905.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.13 : 15,854.49 = 6,453.81 : x
  2. Step 2: Convert to fraction form
    11,489.13/15,854.49 = 6,453.81/x
  3. Step 3: Cross multiply
    11,489.13x = 15,854.49 × 6,453.81
  4. Step 4: Simplify right side
    11,489.13x = 102,321,866.11
  5. Step 5: Solve for x
    x = 102,321,866.11/11,489.13
  6. Step 6: Final answer
    x = 8,905.97

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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.