Home / 20,076.80-27,706.19-11,124.41

Finding the Fourth Proportional to 20,076.80, 27,706.19 and 11,124.41

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Solution

The fourth proportional to 20,076.80, 27,706.19 and 11,124.41 is: 15,351.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.80 : 27,706.19 = 11,124.41 : x
  2. Step 2: Convert to fraction form
    20,076.80/27,706.19 = 11,124.41/x
  3. Step 3: Cross multiply
    20,076.80x = 27,706.19 × 11,124.41
  4. Step 4: Simplify right side
    20,076.80x = 308,214,822.94
  5. Step 5: Solve for x
    x = 308,214,822.94/20,076.80
  6. Step 6: Final answer
    x = 15,351.79

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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.