Home / 13,855.32-20,777.04-3,992.22

Finding the Fourth Proportional to 13,855.32, 20,777.04 and 3,992.22

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Solution

The fourth proportional to 13,855.32, 20,777.04 and 3,992.22 is: 5,986.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.32 : 20,777.04 = 3,992.22 : x
  2. Step 2: Convert to fraction form
    13,855.32/20,777.04 = 3,992.22/x
  3. Step 3: Cross multiply
    13,855.32x = 20,777.04 × 3,992.22
  4. Step 4: Simplify right side
    13,855.32x = 82,946,514.63
  5. Step 5: Solve for x
    x = 82,946,514.63/13,855.32
  6. Step 6: Final answer
    x = 5,986.62

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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.