Home / 12,249.32-18,373.64-3,929

Finding the Fourth Proportional to 12,249.32, 18,373.64 and 3,929

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Solution

The fourth proportional to 12,249.32, 18,373.64 and 3,929 is: 5,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.32 : 18,373.64 = 3,929 : x
  2. Step 2: Convert to fraction form
    12,249.32/18,373.64 = 3,929/x
  3. Step 3: Cross multiply
    12,249.32x = 18,373.64 × 3,929
  4. Step 4: Simplify right side
    12,249.32x = 72,190,031.56
  5. Step 5: Solve for x
    x = 72,190,031.56/12,249.32
  6. Step 6: Final answer
    x = 5,893.39

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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.