Home / 12,730.78-19,092.53-4,408.64

Finding the Fourth Proportional to 12,730.78, 19,092.53 and 4,408.64

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Solution

The fourth proportional to 12,730.78, 19,092.53 and 4,408.64 is: 6,611.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.78 : 19,092.53 = 4,408.64 : x
  2. Step 2: Convert to fraction form
    12,730.78/19,092.53 = 4,408.64/x
  3. Step 3: Cross multiply
    12,730.78x = 19,092.53 × 4,408.64
  4. Step 4: Simplify right side
    12,730.78x = 84,172,021.68
  5. Step 5: Solve for x
    x = 84,172,021.68/12,730.78
  6. Step 6: Final answer
    x = 6,611.69

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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.