Home / 12,743.28-19,114.20-3,975.84

Finding the Fourth Proportional to 12,743.28, 19,114.20 and 3,975.84

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Solution

The fourth proportional to 12,743.28, 19,114.20 and 3,975.84 is: 5,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.28 : 19,114.20 = 3,975.84 : x
  2. Step 2: Convert to fraction form
    12,743.28/19,114.20 = 3,975.84/x
  3. Step 3: Cross multiply
    12,743.28x = 19,114.20 × 3,975.84
  4. Step 4: Simplify right side
    12,743.28x = 75,995,000.93
  5. Step 5: Solve for x
    x = 75,995,000.93/12,743.28
  6. Step 6: Final answer
    x = 5,963.54

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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.