Home / 20,968.56-28,936.62-11,537.70

Finding the Fourth Proportional to 20,968.56, 28,936.62 and 11,537.70

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Solution

The fourth proportional to 20,968.56, 28,936.62 and 11,537.70 is: 15,922.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.56 : 28,936.62 = 11,537.70 : x
  2. Step 2: Convert to fraction form
    20,968.56/28,936.62 = 11,537.70/x
  3. Step 3: Cross multiply
    20,968.56x = 28,936.62 × 11,537.70
  4. Step 4: Simplify right side
    20,968.56x = 333,862,040.57
  5. Step 5: Solve for x
    x = 333,862,040.57/20,968.56
  6. Step 6: Final answer
    x = 15,922.03

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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.