Home / 26,512.78-39,761.25-8,740.12

Finding the Fourth Proportional to 26,512.78, 39,761.25 and 8,740.12

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Solution

The fourth proportional to 26,512.78, 39,761.25 and 8,740.12 is: 13,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,512.78 : 39,761.25 = 8,740.12 : x
  2. Step 2: Convert to fraction form
    26,512.78/39,761.25 = 8,740.12/x
  3. Step 3: Cross multiply
    26,512.78x = 39,761.25 × 8,740.12
  4. Step 4: Simplify right side
    26,512.78x = 347,518,096.35
  5. Step 5: Solve for x
    x = 347,518,096.35/26,512.78
  6. Step 6: Final answer
    x = 13,107.57

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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.