Home / 12,419.31-18,628.97-3,185.31

Finding the Fourth Proportional to 12,419.31, 18,628.97 and 3,185.31

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Solution

The fourth proportional to 12,419.31, 18,628.97 and 3,185.31 is: 4,777.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.31 : 18,628.97 = 3,185.31 : x
  2. Step 2: Convert to fraction form
    12,419.31/18,628.97 = 3,185.31/x
  3. Step 3: Cross multiply
    12,419.31x = 18,628.97 × 3,185.31
  4. Step 4: Simplify right side
    12,419.31x = 59,339,044.43
  5. Step 5: Solve for x
    x = 59,339,044.43/12,419.31
  6. Step 6: Final answer
    x = 4,777.97

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Similar ratio
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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.