Home / 12,178.26-18,268.83-3,858.66

Finding the Fourth Proportional to 12,178.26, 18,268.83 and 3,858.66

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Solution

The fourth proportional to 12,178.26, 18,268.83 and 3,858.66 is: 5,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.26 : 18,268.83 = 3,858.66 : x
  2. Step 2: Convert to fraction form
    12,178.26/18,268.83 = 3,858.66/x
  3. Step 3: Cross multiply
    12,178.26x = 18,268.83 × 3,858.66
  4. Step 4: Simplify right side
    12,178.26x = 70,493,203.57
  5. Step 5: Solve for x
    x = 70,493,203.57/12,178.26
  6. Step 6: Final answer
    x = 5,788.45

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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.