Home / 11,230.25-16,830.69-8,120.66

Finding the Fourth Proportional to 11,230.25, 16,830.69 and 8,120.66

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Solution

The fourth proportional to 11,230.25, 16,830.69 and 8,120.66 is: 12,170.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,230.25 : 16,830.69 = 8,120.66 : x
  2. Step 2: Convert to fraction form
    11,230.25/16,830.69 = 8,120.66/x
  3. Step 3: Cross multiply
    11,230.25x = 16,830.69 × 8,120.66
  4. Step 4: Simplify right side
    11,230.25x = 136,676,196.45
  5. Step 5: Solve for x
    x = 136,676,196.45/11,230.25
  6. Step 6: Final answer
    x = 12,170.37

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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.