Home / 15,481.99-21,365.27-8,408.44

Finding the Fourth Proportional to 15,481.99, 21,365.27 and 8,408.44

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Solution

The fourth proportional to 15,481.99, 21,365.27 and 8,408.44 is: 11,603.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.99 : 21,365.27 = 8,408.44 : x
  2. Step 2: Convert to fraction form
    15,481.99/21,365.27 = 8,408.44/x
  3. Step 3: Cross multiply
    15,481.99x = 21,365.27 × 8,408.44
  4. Step 4: Simplify right side
    15,481.99x = 179,648,590.88
  5. Step 5: Solve for x
    x = 179,648,590.88/15,481.99
  6. Step 6: Final answer
    x = 11,603.71

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1.5x scale

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.