Home / 12,242.25-18,364.68-3,919.29

Finding the Fourth Proportional to 12,242.25, 18,364.68 and 3,919.29

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Solution

The fourth proportional to 12,242.25, 18,364.68 and 3,919.29 is: 5,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,242.25 : 18,364.68 = 3,919.29 : x
  2. Step 2: Convert to fraction form
    12,242.25/18,364.68 = 3,919.29/x
  3. Step 3: Cross multiply
    12,242.25x = 18,364.68 × 3,919.29
  4. Step 4: Simplify right side
    12,242.25x = 71,976,506.68
  5. Step 5: Solve for x
    x = 71,976,506.68/12,242.25
  6. Step 6: Final answer
    x = 5,879.35

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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.