Home / 12,143.31-18,214.99-3,378.22

Finding the Fourth Proportional to 12,143.31, 18,214.99 and 3,378.22

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Solution

The fourth proportional to 12,143.31, 18,214.99 and 3,378.22 is: 5,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.31 : 18,214.99 = 3,378.22 : x
  2. Step 2: Convert to fraction form
    12,143.31/18,214.99 = 3,378.22/x
  3. Step 3: Cross multiply
    12,143.31x = 18,214.99 × 3,378.22
  4. Step 4: Simplify right side
    12,143.31x = 61,534,243.52
  5. Step 5: Solve for x
    x = 61,534,243.52/12,143.31
  6. Step 6: Final answer
    x = 5,067.34

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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.