Home / 12,138.64-18,204.96-3,373.12

Finding the Fourth Proportional to 12,138.64, 18,204.96 and 3,373.12

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Solution

The fourth proportional to 12,138.64, 18,204.96 and 3,373.12 is: 5,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.64 : 18,204.96 = 3,373.12 : x
  2. Step 2: Convert to fraction form
    12,138.64/18,204.96 = 3,373.12/x
  3. Step 3: Cross multiply
    12,138.64x = 18,204.96 × 3,373.12
  4. Step 4: Simplify right side
    12,138.64x = 61,407,514.68
  5. Step 5: Solve for x
    x = 61,407,514.68/12,138.64
  6. Step 6: Final answer
    x = 5,058.85

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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.