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Finding the Fourth Proportional to 26,427.24, 39,640.86 and 7,959.24

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Solution

The fourth proportional to 26,427.24, 39,640.86 and 7,959.24 is: 11,938.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,427.24 : 39,640.86 = 7,959.24 : x
  2. Step 2: Convert to fraction form
    26,427.24/39,640.86 = 7,959.24/x
  3. Step 3: Cross multiply
    26,427.24x = 39,640.86 × 7,959.24
  4. Step 4: Simplify right side
    26,427.24x = 315,511,118.55
  5. Step 5: Solve for x
    x = 315,511,118.55/26,427.24
  6. Step 6: Final answer
    x = 11,938.86

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1.5x scale

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.