Home / 20,090.30-27,725.78-12,133.70

Finding the Fourth Proportional to 20,090.30, 27,725.78 and 12,133.70

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Solution

The fourth proportional to 20,090.30, 27,725.78 and 12,133.70 is: 16,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.30 : 27,725.78 = 12,133.70 : x
  2. Step 2: Convert to fraction form
    20,090.30/27,725.78 = 12,133.70/x
  3. Step 3: Cross multiply
    20,090.30x = 27,725.78 × 12,133.70
  4. Step 4: Simplify right side
    20,090.30x = 336,416,296.79
  5. Step 5: Solve for x
    x = 336,416,296.79/20,090.30
  6. Step 6: Final answer
    x = 16,745.21

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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.