Home / 11,919.53-17,872.38-7,975.31

Finding the Fourth Proportional to 11,919.53, 17,872.38 and 7,975.31

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Solution

The fourth proportional to 11,919.53, 17,872.38 and 7,975.31 is: 11,958.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.53 : 17,872.38 = 7,975.31 : x
  2. Step 2: Convert to fraction form
    11,919.53/17,872.38 = 7,975.31/x
  3. Step 3: Cross multiply
    11,919.53x = 17,872.38 × 7,975.31
  4. Step 4: Simplify right side
    11,919.53x = 142,537,681.58
  5. Step 5: Solve for x
    x = 142,537,681.58/11,919.53
  6. Step 6: Final answer
    x = 11,958.33

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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.