Home / 13,212.87-18,223.17-11,616.12

Finding the Fourth Proportional to 13,212.87, 18,223.17 and 11,616.12

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Solution

The fourth proportional to 13,212.87, 18,223.17 and 11,616.12 is: 16,020.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.87 : 18,223.17 = 11,616.12 : x
  2. Step 2: Convert to fraction form
    13,212.87/18,223.17 = 11,616.12/x
  3. Step 3: Cross multiply
    13,212.87x = 18,223.17 × 11,616.12
  4. Step 4: Simplify right side
    13,212.87x = 211,682,471.42
  5. Step 5: Solve for x
    x = 211,682,471.42/13,212.87
  6. Step 6: Final answer
    x = 16,020.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.