Home / 20,062.88-27,687.80-11,111.38

Finding the Fourth Proportional to 20,062.88, 27,687.80 and 11,111.38

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Solution

The fourth proportional to 20,062.88, 27,687.80 and 11,111.38 is: 15,334.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,062.88 : 27,687.80 = 11,111.38 : x
  2. Step 2: Convert to fraction form
    20,062.88/27,687.80 = 11,111.38/x
  3. Step 3: Cross multiply
    20,062.88x = 27,687.80 × 11,111.38
  4. Step 4: Simplify right side
    20,062.88x = 307,649,667.16
  5. Step 5: Solve for x
    x = 307,649,667.16/20,062.88
  6. Step 6: Final answer
    x = 15,334.27

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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.