Home / 17,640.39-26,453.90-5,157.78

Finding the Fourth Proportional to 17,640.39, 26,453.90 and 5,157.78

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Solution

The fourth proportional to 17,640.39, 26,453.90 and 5,157.78 is: 7,734.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,640.39 : 26,453.90 = 5,157.78 : x
  2. Step 2: Convert to fraction form
    17,640.39/26,453.90 = 5,157.78/x
  3. Step 3: Cross multiply
    17,640.39x = 26,453.90 × 5,157.78
  4. Step 4: Simplify right side
    17,640.39x = 136,443,370.55
  5. Step 5: Solve for x
    x = 136,443,370.55/17,640.39
  6. Step 6: Final answer
    x = 7,734.71

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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.