Home / 10,919.49-16,388.96-5,079.39

Finding the Fourth Proportional to 10,919.49, 16,388.96 and 5,079.39

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Solution

The fourth proportional to 10,919.49, 16,388.96 and 5,079.39 is: 7,623.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.49 : 16,388.96 = 5,079.39 : x
  2. Step 2: Convert to fraction form
    10,919.49/16,388.96 = 5,079.39/x
  3. Step 3: Cross multiply
    10,919.49x = 16,388.96 × 5,079.39
  4. Step 4: Simplify right side
    10,919.49x = 83,245,894.14
  5. Step 5: Solve for x
    x = 83,245,894.14/10,919.49
  6. Step 6: Final answer
    x = 7,623.61

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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.