Home / 20,193.20-27,868.12-11,697.60

Finding the Fourth Proportional to 20,193.20, 27,868.12 and 11,697.60

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Solution

The fourth proportional to 20,193.20, 27,868.12 and 11,697.60 is: 16,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.20 : 27,868.12 = 11,697.60 : x
  2. Step 2: Convert to fraction form
    20,193.20/27,868.12 = 11,697.60/x
  3. Step 3: Cross multiply
    20,193.20x = 27,868.12 × 11,697.60
  4. Step 4: Simplify right side
    20,193.20x = 325,990,120.51
  5. Step 5: Solve for x
    x = 325,990,120.51/20,193.20
  6. Step 6: Final answer
    x = 16,143.56

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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.