Home / 13,176.96-18,185.04-7,872

Finding the Fourth Proportional to 13,176.96, 18,185.04 and 7,872

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Solution

The fourth proportional to 13,176.96, 18,185.04 and 7,872 is: 10,863.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.96 : 18,185.04 = 7,872 : x
  2. Step 2: Convert to fraction form
    13,176.96/18,185.04 = 7,872/x
  3. Step 3: Cross multiply
    13,176.96x = 18,185.04 × 7,872
  4. Step 4: Simplify right side
    13,176.96x = 143,152,634.88
  5. Step 5: Solve for x
    x = 143,152,634.88/13,176.96
  6. Step 6: Final answer
    x = 10,863.86

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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.