Home / 20,969.44-28,937.82-11,538

Finding the Fourth Proportional to 20,969.44, 28,937.82 and 11,538

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Solution

The fourth proportional to 20,969.44, 28,937.82 and 11,538 is: 15,922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.44 : 28,937.82 = 11,538 : x
  2. Step 2: Convert to fraction form
    20,969.44/28,937.82 = 11,538/x
  3. Step 3: Cross multiply
    20,969.44x = 28,937.82 × 11,538
  4. Step 4: Simplify right side
    20,969.44x = 333,884,610.43
  5. Step 5: Solve for x
    x = 333,884,610.43/20,969.44
  6. Step 6: Final answer
    x = 15,922.44

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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.