Home / 13,212.80-18,223.22-11,701.94

Finding the Fourth Proportional to 13,212.80, 18,223.22 and 11,701.94

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Solution

The fourth proportional to 13,212.80, 18,223.22 and 11,701.94 is: 16,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.80 : 18,223.22 = 11,701.94 : x
  2. Step 2: Convert to fraction form
    13,212.80/18,223.22 = 11,701.94/x
  3. Step 3: Cross multiply
    13,212.80x = 18,223.22 × 11,701.94
  4. Step 4: Simplify right side
    13,212.80x = 213,247,027.05
  5. Step 5: Solve for x
    x = 213,247,027.05/13,212.80
  6. Step 6: Final answer
    x = 16,139.43

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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.