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Finding the Fourth Proportional to 26,391.58, 39,589.44 and 7,671.90

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Solution

The fourth proportional to 26,391.58, 39,589.44 and 7,671.90 is: 11,508.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,391.58 : 39,589.44 = 7,671.90 : x
  2. Step 2: Convert to fraction form
    26,391.58/39,589.44 = 7,671.90/x
  3. Step 3: Cross multiply
    26,391.58x = 39,589.44 × 7,671.90
  4. Step 4: Simplify right side
    26,391.58x = 303,726,026.79
  5. Step 5: Solve for x
    x = 303,726,026.79/26,391.58
  6. Step 6: Final answer
    x = 11,508.44

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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.