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Finding the Fourth Proportional to 17,919.98, 26,879.94 and 4,772.39

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Solution

The fourth proportional to 17,919.98, 26,879.94 and 4,772.39 is: 7,158.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,919.98 : 26,879.94 = 4,772.39 : x
  2. Step 2: Convert to fraction form
    17,919.98/26,879.94 = 4,772.39/x
  3. Step 3: Cross multiply
    17,919.98x = 26,879.94 × 4,772.39
  4. Step 4: Simplify right side
    17,919.98x = 128,281,556.86
  5. Step 5: Solve for x
    x = 128,281,556.86/17,919.98
  6. Step 6: Final answer
    x = 7,158.58

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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.