Home / 17,138.79-25,702.68-5,449.28

Finding the Fourth Proportional to 17,138.79, 25,702.68 and 5,449.28

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Solution

The fourth proportional to 17,138.79, 25,702.68 and 5,449.28 is: 8,172.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,138.79 : 25,702.68 = 5,449.28 : x
  2. Step 2: Convert to fraction form
    17,138.79/25,702.68 = 5,449.28/x
  3. Step 3: Cross multiply
    17,138.79x = 25,702.68 × 5,449.28
  4. Step 4: Simplify right side
    17,138.79x = 140,060,971.56
  5. Step 5: Solve for x
    x = 140,060,971.56/17,138.79
  6. Step 6: Final answer
    x = 8,172.16

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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.