Home / 12,431.54-18,644.60-4,109.58

Finding the Fourth Proportional to 12,431.54, 18,644.60 and 4,109.58

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Solution

The fourth proportional to 12,431.54, 18,644.60 and 4,109.58 is: 6,163.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.54 : 18,644.60 = 4,109.58 : x
  2. Step 2: Convert to fraction form
    12,431.54/18,644.60 = 4,109.58/x
  3. Step 3: Cross multiply
    12,431.54x = 18,644.60 × 4,109.58
  4. Step 4: Simplify right side
    12,431.54x = 76,621,454.72
  5. Step 5: Solve for x
    x = 76,621,454.72/12,431.54
  6. Step 6: Final answer
    x = 6,163.47

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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.