Home / 13,808.80-20,729.04-11,722.24

Finding the Fourth Proportional to 13,808.80, 20,729.04 and 11,722.24

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Solution

The fourth proportional to 13,808.80, 20,729.04 and 11,722.24 is: 17,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.80 : 20,729.04 = 11,722.24 : x
  2. Step 2: Convert to fraction form
    13,808.80/20,729.04 = 11,722.24/x
  3. Step 3: Cross multiply
    13,808.80x = 20,729.04 × 11,722.24
  4. Step 4: Simplify right side
    13,808.80x = 242,990,781.85
  5. Step 5: Solve for x
    x = 242,990,781.85/13,808.80
  6. Step 6: Final answer
    x = 17,596.81

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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.