Home / 11,658.18-16,103.68-8,639.44

Finding the Fourth Proportional to 11,658.18, 16,103.68 and 8,639.44

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Solution

The fourth proportional to 11,658.18, 16,103.68 and 8,639.44 is: 11,933.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,658.18 : 16,103.68 = 8,639.44 : x
  2. Step 2: Convert to fraction form
    11,658.18/16,103.68 = 8,639.44/x
  3. Step 3: Cross multiply
    11,658.18x = 16,103.68 × 8,639.44
  4. Step 4: Simplify right side
    11,658.18x = 139,126,777.14
  5. Step 5: Solve for x
    x = 139,126,777.14/11,658.18
  6. Step 6: Final answer
    x = 11,933.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.