Home / 12,540.54-18,811.74-4,220.52

Finding the Fourth Proportional to 12,540.54, 18,811.74 and 4,220.52

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Solution

The fourth proportional to 12,540.54, 18,811.74 and 4,220.52 is: 6,331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.54 : 18,811.74 = 4,220.52 : x
  2. Step 2: Convert to fraction form
    12,540.54/18,811.74 = 4,220.52/x
  3. Step 3: Cross multiply
    12,540.54x = 18,811.74 × 4,220.52
  4. Step 4: Simplify right side
    12,540.54x = 79,395,324.90
  5. Step 5: Solve for x
    x = 79,395,324.90/12,540.54
  6. Step 6: Final answer
    x = 6,331.09

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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.