Home / 20,269.89-27,958.38-13,897.06

Finding the Fourth Proportional to 20,269.89, 27,958.38 and 13,897.06

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Solution

The fourth proportional to 20,269.89, 27,958.38 and 13,897.06 is: 19,168.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.89 : 27,958.38 = 13,897.06 : x
  2. Step 2: Convert to fraction form
    20,269.89/27,958.38 = 13,897.06/x
  3. Step 3: Cross multiply
    20,269.89x = 27,958.38 × 13,897.06
  4. Step 4: Simplify right side
    20,269.89x = 388,539,162.35
  5. Step 5: Solve for x
    x = 388,539,162.35/20,269.89
  6. Step 6: Final answer
    x = 19,168.29

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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.