Home / 11,123.20-16,684.80-4,196.80

Finding the Fourth Proportional to 11,123.20, 16,684.80 and 4,196.80

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Solution

The fourth proportional to 11,123.20, 16,684.80 and 4,196.80 is: 6,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.20 : 16,684.80 = 4,196.80 : x
  2. Step 2: Convert to fraction form
    11,123.20/16,684.80 = 4,196.80/x
  3. Step 3: Cross multiply
    11,123.20x = 16,684.80 × 4,196.80
  4. Step 4: Simplify right side
    11,123.20x = 70,022,768.64
  5. Step 5: Solve for x
    x = 70,022,768.64/11,123.20
  6. Step 6: Final answer
    x = 6,295.20

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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.