Home / 12,143.25-18,214.02-3,378.24

Finding the Fourth Proportional to 12,143.25, 18,214.02 and 3,378.24

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Solution

The fourth proportional to 12,143.25, 18,214.02 and 3,378.24 is: 5,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.25 : 18,214.02 = 3,378.24 : x
  2. Step 2: Convert to fraction form
    12,143.25/18,214.02 = 3,378.24/x
  3. Step 3: Cross multiply
    12,143.25x = 18,214.02 × 3,378.24
  4. Step 4: Simplify right side
    12,143.25x = 61,531,330.92
  5. Step 5: Solve for x
    x = 61,531,330.92/12,143.25
  6. Step 6: Final answer
    x = 5,067.12

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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.