Home / 12,142.08-18,213.80-3,376.80

Finding the Fourth Proportional to 12,142.08, 18,213.80 and 3,376.80

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Solution

The fourth proportional to 12,142.08, 18,213.80 and 3,376.80 is: 5,065.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.08 : 18,213.80 = 3,376.80 : x
  2. Step 2: Convert to fraction form
    12,142.08/18,213.80 = 3,376.80/x
  3. Step 3: Cross multiply
    12,142.08x = 18,213.80 × 3,376.80
  4. Step 4: Simplify right side
    12,142.08x = 61,504,359.84
  5. Step 5: Solve for x
    x = 61,504,359.84/12,142.08
  6. Step 6: Final answer
    x = 5,065.39

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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.