Home / 12,129.42-18,194.16-3,364.36

Finding the Fourth Proportional to 12,129.42, 18,194.16 and 3,364.36

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Solution

The fourth proportional to 12,129.42, 18,194.16 and 3,364.36 is: 5,046.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.42 : 18,194.16 = 3,364.36 : x
  2. Step 2: Convert to fraction form
    12,129.42/18,194.16 = 3,364.36/x
  3. Step 3: Cross multiply
    12,129.42x = 18,194.16 × 3,364.36
  4. Step 4: Simplify right side
    12,129.42x = 61,211,726.88
  5. Step 5: Solve for x
    x = 61,211,726.88/12,129.42
  6. Step 6: Final answer
    x = 5,046.55

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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.