Home / 20,147.40-27,799.20-11,763.90

Finding the Fourth Proportional to 20,147.40, 27,799.20 and 11,763.90

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Solution

The fourth proportional to 20,147.40, 27,799.20 and 11,763.90 is: 16,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.40 : 27,799.20 = 11,763.90 : x
  2. Step 2: Convert to fraction form
    20,147.40/27,799.20 = 11,763.90/x
  3. Step 3: Cross multiply
    20,147.40x = 27,799.20 × 11,763.90
  4. Step 4: Simplify right side
    20,147.40x = 327,027,008.88
  5. Step 5: Solve for x
    x = 327,027,008.88/20,147.40
  6. Step 6: Final answer
    x = 16,231.72

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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.