Home / 12,119.68-18,179.54-3,686.26

Finding the Fourth Proportional to 12,119.68, 18,179.54 and 3,686.26

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Solution

The fourth proportional to 12,119.68, 18,179.54 and 3,686.26 is: 5,529.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.68 : 18,179.54 = 3,686.26 : x
  2. Step 2: Convert to fraction form
    12,119.68/18,179.54 = 3,686.26/x
  3. Step 3: Cross multiply
    12,119.68x = 18,179.54 × 3,686.26
  4. Step 4: Simplify right side
    12,119.68x = 67,014,474.89
  5. Step 5: Solve for x
    x = 67,014,474.89/12,119.68
  6. Step 6: Final answer
    x = 5,529.39

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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.