Home / 12,939.24-19,408.86-8,584.52

Finding the Fourth Proportional to 12,939.24, 19,408.86 and 8,584.52

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Solution

The fourth proportional to 12,939.24, 19,408.86 and 8,584.52 is: 12,876.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.24 : 19,408.86 = 8,584.52 : x
  2. Step 2: Convert to fraction form
    12,939.24/19,408.86 = 8,584.52/x
  3. Step 3: Cross multiply
    12,939.24x = 19,408.86 × 8,584.52
  4. Step 4: Simplify right side
    12,939.24x = 166,615,746.85
  5. Step 5: Solve for x
    x = 166,615,746.85/12,939.24
  6. Step 6: Final answer
    x = 12,876.78

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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.