Home / 10,639.80-15,944.77-8,408.83

Finding the Fourth Proportional to 10,639.80, 15,944.77 and 8,408.83

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Solution

The fourth proportional to 10,639.80, 15,944.77 and 8,408.83 is: 12,601.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.80 : 15,944.77 = 8,408.83 : x
  2. Step 2: Convert to fraction form
    10,639.80/15,944.77 = 8,408.83/x
  3. Step 3: Cross multiply
    10,639.80x = 15,944.77 × 8,408.83
  4. Step 4: Simplify right side
    10,639.80x = 134,076,799.44
  5. Step 5: Solve for x
    x = 134,076,799.44/10,639.80
  6. Step 6: Final answer
    x = 12,601.44

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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.