Home / 20,076.12-27,702.80-11,121.41

Finding the Fourth Proportional to 20,076.12, 27,702.80 and 11,121.41

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Solution

The fourth proportional to 20,076.12, 27,702.80 and 11,121.41 is: 15,346.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.12 : 27,702.80 = 11,121.41 : x
  2. Step 2: Convert to fraction form
    20,076.12/27,702.80 = 11,121.41/x
  3. Step 3: Cross multiply
    20,076.12x = 27,702.80 × 11,121.41
  4. Step 4: Simplify right side
    20,076.12x = 308,094,002.83
  5. Step 5: Solve for x
    x = 308,094,002.83/20,076.12
  6. Step 6: Final answer
    x = 15,346.29

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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.