Home / 20,072.27-27,701.30-11,120.60

Finding the Fourth Proportional to 20,072.27, 27,701.30 and 11,120.60

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Solution

The fourth proportional to 20,072.27, 27,701.30 and 11,120.60 is: 15,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.27 : 27,701.30 = 11,120.60 : x
  2. Step 2: Convert to fraction form
    20,072.27/27,701.30 = 11,120.60/x
  3. Step 3: Cross multiply
    20,072.27x = 27,701.30 × 11,120.60
  4. Step 4: Simplify right side
    20,072.27x = 308,055,076.78
  5. Step 5: Solve for x
    x = 308,055,076.78/20,072.27
  6. Step 6: Final answer
    x = 15,347.30

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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.