Home / 12,503.78-18,743.62-4,179.18

Finding the Fourth Proportional to 12,503.78, 18,743.62 and 4,179.18

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Solution

The fourth proportional to 12,503.78, 18,743.62 and 4,179.18 is: 6,264.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.78 : 18,743.62 = 4,179.18 : x
  2. Step 2: Convert to fraction form
    12,503.78/18,743.62 = 4,179.18/x
  3. Step 3: Cross multiply
    12,503.78x = 18,743.62 × 4,179.18
  4. Step 4: Simplify right side
    12,503.78x = 78,332,961.83
  5. Step 5: Solve for x
    x = 78,332,961.83/12,503.78
  6. Step 6: Final answer
    x = 6,264.74

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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.