Home / 20,204.12-27,882.81-12,140.24

Finding the Fourth Proportional to 20,204.12, 27,882.81 and 12,140.24

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Solution

The fourth proportional to 20,204.12, 27,882.81 and 12,140.24 is: 16,754.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.12 : 27,882.81 = 12,140.24 : x
  2. Step 2: Convert to fraction form
    20,204.12/27,882.81 = 12,140.24/x
  3. Step 3: Cross multiply
    20,204.12x = 27,882.81 × 12,140.24
  4. Step 4: Simplify right side
    20,204.12x = 338,504,027.77
  5. Step 5: Solve for x
    x = 338,504,027.77/20,204.12
  6. Step 6: Final answer
    x = 16,754.21

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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.