Home / 20,149.55-27,803.09-11,196.81

Finding the Fourth Proportional to 20,149.55, 27,803.09 and 11,196.81

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Solution

The fourth proportional to 20,149.55, 27,803.09 and 11,196.81 is: 15,449.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.55 : 27,803.09 = 11,196.81 : x
  2. Step 2: Convert to fraction form
    20,149.55/27,803.09 = 11,196.81/x
  3. Step 3: Cross multiply
    20,149.55x = 27,803.09 × 11,196.81
  4. Step 4: Simplify right side
    20,149.55x = 311,305,860.16
  5. Step 5: Solve for x
    x = 311,305,860.16/20,149.55
  6. Step 6: Final answer
    x = 15,449.77

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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.