Home / 13,546.80-20,320.20-11,906.55

Finding the Fourth Proportional to 13,546.80, 20,320.20 and 11,906.55

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Solution

The fourth proportional to 13,546.80, 20,320.20 and 11,906.55 is: 17,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,546.80 : 20,320.20 = 11,906.55 : x
  2. Step 2: Convert to fraction form
    13,546.80/20,320.20 = 11,906.55/x
  3. Step 3: Cross multiply
    13,546.80x = 20,320.20 × 11,906.55
  4. Step 4: Simplify right side
    13,546.80x = 241,943,477.31
  5. Step 5: Solve for x
    x = 241,943,477.31/13,546.80
  6. Step 6: Final answer
    x = 17,859.83

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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.