Home / 20,109.28-27,751.26-11,156.66

Finding the Fourth Proportional to 20,109.28, 27,751.26 and 11,156.66

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Solution

The fourth proportional to 20,109.28, 27,751.26 and 11,156.66 is: 15,396.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.28 : 27,751.26 = 11,156.66 : x
  2. Step 2: Convert to fraction form
    20,109.28/27,751.26 = 11,156.66/x
  3. Step 3: Cross multiply
    20,109.28x = 27,751.26 × 11,156.66
  4. Step 4: Simplify right side
    20,109.28x = 309,611,177.85
  5. Step 5: Solve for x
    x = 309,611,177.85/20,109.28
  6. Step 6: Final answer
    x = 15,396.43

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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.