Home / 11,105.40-16,621.65-8,626.80

Finding the Fourth Proportional to 11,105.40, 16,621.65 and 8,626.80

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Solution

The fourth proportional to 11,105.40, 16,621.65 and 8,626.80 is: 12,911.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.40 : 16,621.65 = 8,626.80 : x
  2. Step 2: Convert to fraction form
    11,105.40/16,621.65 = 8,626.80/x
  3. Step 3: Cross multiply
    11,105.40x = 16,621.65 × 8,626.80
  4. Step 4: Simplify right side
    11,105.40x = 143,391,650.22
  5. Step 5: Solve for x
    x = 143,391,650.22/11,105.40
  6. Step 6: Final answer
    x = 12,911.89

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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.