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Finding the Fourth Proportional to 12,143.44, 18,222.44 and 4,352.84

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Solution

The fourth proportional to 12,143.44, 18,222.44 and 4,352.84 is: 6,531.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.44 : 18,222.44 = 4,352.84 : x
  2. Step 2: Convert to fraction form
    12,143.44/18,222.44 = 4,352.84/x
  3. Step 3: Cross multiply
    12,143.44x = 18,222.44 × 4,352.84
  4. Step 4: Simplify right side
    12,143.44x = 79,319,365.73
  5. Step 5: Solve for x
    x = 79,319,365.73/12,143.44
  6. Step 6: Final answer
    x = 6,531.87

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1.5x scale

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.