Home / 11,719.80-17,580.58-3,928.60

Finding the Fourth Proportional to 11,719.80, 17,580.58 and 3,928.60

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Solution

The fourth proportional to 11,719.80, 17,580.58 and 3,928.60 is: 5,893.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.80 : 17,580.58 = 3,928.60 : x
  2. Step 2: Convert to fraction form
    11,719.80/17,580.58 = 3,928.60/x
  3. Step 3: Cross multiply
    11,719.80x = 17,580.58 × 3,928.60
  4. Step 4: Simplify right side
    11,719.80x = 69,067,066.59
  5. Step 5: Solve for x
    x = 69,067,066.59/11,719.80
  6. Step 6: Final answer
    x = 5,893.19

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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.