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Finding the Fourth Proportional to 17,993.28, 26,991.72 and 5,513.16

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Solution

The fourth proportional to 17,993.28, 26,991.72 and 5,513.16 is: 8,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,993.28 : 26,991.72 = 5,513.16 : x
  2. Step 2: Convert to fraction form
    17,993.28/26,991.72 = 5,513.16/x
  3. Step 3: Cross multiply
    17,993.28x = 26,991.72 × 5,513.16
  4. Step 4: Simplify right side
    17,993.28x = 148,809,671.04
  5. Step 5: Solve for x
    x = 148,809,671.04/17,993.28
  6. Step 6: Final answer
    x = 8,270.29

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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.