Home / 20,131.28-27,776.69-12,173.34

Finding the Fourth Proportional to 20,131.28, 27,776.69 and 12,173.34

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Solution

The fourth proportional to 20,131.28, 27,776.69 and 12,173.34 is: 16,796.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.28 : 27,776.69 = 12,173.34 : x
  2. Step 2: Convert to fraction form
    20,131.28/27,776.69 = 12,173.34/x
  3. Step 3: Cross multiply
    20,131.28x = 27,776.69 × 12,173.34
  4. Step 4: Simplify right side
    20,131.28x = 338,135,052.44
  5. Step 5: Solve for x
    x = 338,135,052.44/20,131.28
  6. Step 6: Final answer
    x = 16,796.50

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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.