Home / 20,687.35-28,550.04-11,735.64

Finding the Fourth Proportional to 20,687.35, 28,550.04 and 11,735.64

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Solution

The fourth proportional to 20,687.35, 28,550.04 and 11,735.64 is: 16,196.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.35 : 28,550.04 = 11,735.64 : x
  2. Step 2: Convert to fraction form
    20,687.35/28,550.04 = 11,735.64/x
  3. Step 3: Cross multiply
    20,687.35x = 28,550.04 × 11,735.64
  4. Step 4: Simplify right side
    20,687.35x = 335,052,991.43
  5. Step 5: Solve for x
    x = 335,052,991.43/20,687.35
  6. Step 6: Final answer
    x = 16,196.03

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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.