Home / 20,220.13-27,903.89-11,727.28

Finding the Fourth Proportional to 20,220.13, 27,903.89 and 11,727.28

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Solution

The fourth proportional to 20,220.13, 27,903.89 and 11,727.28 is: 16,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.13 : 27,903.89 = 11,727.28 : x
  2. Step 2: Convert to fraction form
    20,220.13/27,903.89 = 11,727.28/x
  3. Step 3: Cross multiply
    20,220.13x = 27,903.89 × 11,727.28
  4. Step 4: Simplify right side
    20,220.13x = 327,236,729.35
  5. Step 5: Solve for x
    x = 327,236,729.35/20,220.13
  6. Step 6: Final answer
    x = 16,183.71

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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.