Home / 20,076.89-27,705.65-11,579.03

Finding the Fourth Proportional to 20,076.89, 27,705.65 and 11,579.03

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Solution

The fourth proportional to 20,076.89, 27,705.65 and 11,579.03 is: 15,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.89 : 27,705.65 = 11,579.03 : x
  2. Step 2: Convert to fraction form
    20,076.89/27,705.65 = 11,579.03/x
  3. Step 3: Cross multiply
    20,076.89x = 27,705.65 × 11,579.03
  4. Step 4: Simplify right side
    20,076.89x = 320,804,382.07
  5. Step 5: Solve for x
    x = 320,804,382.07/20,076.89
  6. Step 6: Final answer
    x = 15,978.79

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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.