Home / 18,028.40-27,056.54-11,786.72

Finding the Fourth Proportional to 18,028.40, 27,056.54 and 11,786.72

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Solution

The fourth proportional to 18,028.40, 27,056.54 and 11,786.72 is: 17,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,028.40 : 27,056.54 = 11,786.72 : x
  2. Step 2: Convert to fraction form
    18,028.40/27,056.54 = 11,786.72/x
  3. Step 3: Cross multiply
    18,028.40x = 27,056.54 × 11,786.72
  4. Step 4: Simplify right side
    18,028.40x = 318,907,755.33
  5. Step 5: Solve for x
    x = 318,907,755.33/18,028.40
  6. Step 6: Final answer
    x = 17,689.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.