Home / 20,109.06-27,753.84-11,725.56

Finding the Fourth Proportional to 20,109.06, 27,753.84 and 11,725.56

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Solution

The fourth proportional to 20,109.06, 27,753.84 and 11,725.56 is: 16,183.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.06 : 27,753.84 = 11,725.56 : x
  2. Step 2: Convert to fraction form
    20,109.06/27,753.84 = 11,725.56/x
  3. Step 3: Cross multiply
    20,109.06x = 27,753.84 × 11,725.56
  4. Step 4: Simplify right side
    20,109.06x = 325,429,316.15
  5. Step 5: Solve for x
    x = 325,429,316.15/20,109.06
  6. Step 6: Final answer
    x = 16,183.22

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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.