Home / 12,231.28-16,884.33-8,257.77

Finding the Fourth Proportional to 12,231.28, 16,884.33 and 8,257.77

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Solution

The fourth proportional to 12,231.28, 16,884.33 and 8,257.77 is: 11,399.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.28 : 16,884.33 = 8,257.77 : x
  2. Step 2: Convert to fraction form
    12,231.28/16,884.33 = 8,257.77/x
  3. Step 3: Cross multiply
    12,231.28x = 16,884.33 × 8,257.77
  4. Step 4: Simplify right side
    12,231.28x = 139,426,893.10
  5. Step 5: Solve for x
    x = 139,426,893.10/12,231.28
  6. Step 6: Final answer
    x = 11,399.21

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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.