Home / 20,241.28-27,936.36-12,288.80

Finding the Fourth Proportional to 20,241.28, 27,936.36 and 12,288.80

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Solution

The fourth proportional to 20,241.28, 27,936.36 and 12,288.80 is: 16,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,241.28 : 27,936.36 = 12,288.80 : x
  2. Step 2: Convert to fraction form
    20,241.28/27,936.36 = 12,288.80/x
  3. Step 3: Cross multiply
    20,241.28x = 27,936.36 × 12,288.80
  4. Step 4: Simplify right side
    20,241.28x = 343,304,279.32
  5. Step 5: Solve for x
    x = 343,304,279.32/20,241.28
  6. Step 6: Final answer
    x = 16,960.60

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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.