Home / 11,619.38-17,431.80-3,828.19

Finding the Fourth Proportional to 11,619.38, 17,431.80 and 3,828.19

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Solution

The fourth proportional to 11,619.38, 17,431.80 and 3,828.19 is: 5,743.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,619.38 : 17,431.80 = 3,828.19 : x
  2. Step 2: Convert to fraction form
    11,619.38/17,431.80 = 3,828.19/x
  3. Step 3: Cross multiply
    11,619.38x = 17,431.80 × 3,828.19
  4. Step 4: Simplify right side
    11,619.38x = 66,732,184.51
  5. Step 5: Solve for x
    x = 66,732,184.51/11,619.38
  6. Step 6: Final answer
    x = 5,743.18

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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.