Home / 11,185.86-16,780.85-3,689.87

Finding the Fourth Proportional to 11,185.86, 16,780.85 and 3,689.87

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Solution

The fourth proportional to 11,185.86, 16,780.85 and 3,689.87 is: 5,535.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.86 : 16,780.85 = 3,689.87 : x
  2. Step 2: Convert to fraction form
    11,185.86/16,780.85 = 3,689.87/x
  3. Step 3: Cross multiply
    11,185.86x = 16,780.85 × 3,689.87
  4. Step 4: Simplify right side
    11,185.86x = 61,919,052.64
  5. Step 5: Solve for x
    x = 61,919,052.64/11,185.86
  6. Step 6: Final answer
    x = 5,535.48

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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.