Home / 11,288.30-16,920.43-8,166.83

Finding the Fourth Proportional to 11,288.30, 16,920.43 and 8,166.83

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Solution

The fourth proportional to 11,288.30, 16,920.43 and 8,166.83 is: 12,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,288.30 : 16,920.43 = 8,166.83 : x
  2. Step 2: Convert to fraction form
    11,288.30/16,920.43 = 8,166.83/x
  3. Step 3: Cross multiply
    11,288.30x = 16,920.43 × 8,166.83
  4. Step 4: Simplify right side
    11,288.30x = 138,186,170.32
  5. Step 5: Solve for x
    x = 138,186,170.32/11,288.30
  6. Step 6: Final answer
    x = 12,241.54

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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.