Home / 11,212.60-16,821.60-4,192.78

Finding the Fourth Proportional to 11,212.60, 16,821.60 and 4,192.78

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Solution

The fourth proportional to 11,212.60, 16,821.60 and 4,192.78 is: 6,290.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.60 : 16,821.60 = 4,192.78 : x
  2. Step 2: Convert to fraction form
    11,212.60/16,821.60 = 4,192.78/x
  3. Step 3: Cross multiply
    11,212.60x = 16,821.60 × 4,192.78
  4. Step 4: Simplify right side
    11,212.60x = 70,529,268.05
  5. Step 5: Solve for x
    x = 70,529,268.05/11,212.60
  6. Step 6: Final answer
    x = 6,290.18

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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.