Home / 10,919.63-16,356.22-8,257.88

Finding the Fourth Proportional to 10,919.63, 16,356.22 and 8,257.88

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Solution

The fourth proportional to 10,919.63, 16,356.22 and 8,257.88 is: 12,369.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.63 : 16,356.22 = 8,257.88 : x
  2. Step 2: Convert to fraction form
    10,919.63/16,356.22 = 8,257.88/x
  3. Step 3: Cross multiply
    10,919.63x = 16,356.22 × 8,257.88
  4. Step 4: Simplify right side
    10,919.63x = 135,067,722.26
  5. Step 5: Solve for x
    x = 135,067,722.26/10,919.63
  6. Step 6: Final answer
    x = 12,369.26

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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.