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Finding the Fourth Proportional to 12,668.93, 19,003.44 and 3,903.80

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Solution

The fourth proportional to 12,668.93, 19,003.44 and 3,903.80 is: 5,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.93 : 19,003.44 = 3,903.80 : x
  2. Step 2: Convert to fraction form
    12,668.93/19,003.44 = 3,903.80/x
  3. Step 3: Cross multiply
    12,668.93x = 19,003.44 × 3,903.80
  4. Step 4: Simplify right side
    12,668.93x = 74,185,629.07
  5. Step 5: Solve for x
    x = 74,185,629.07/12,668.93
  6. Step 6: Final answer
    x = 5,855.71

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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.