Home / 12,747.75-19,122.71-3,513.75

Finding the Fourth Proportional to 12,747.75, 19,122.71 and 3,513.75

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Solution

The fourth proportional to 12,747.75, 19,122.71 and 3,513.75 is: 5,270.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.75 : 19,122.71 = 3,513.75 : x
  2. Step 2: Convert to fraction form
    12,747.75/19,122.71 = 3,513.75/x
  3. Step 3: Cross multiply
    12,747.75x = 19,122.71 × 3,513.75
  4. Step 4: Simplify right side
    12,747.75x = 67,192,404.69
  5. Step 5: Solve for x
    x = 67,192,404.69/12,747.75
  6. Step 6: Final answer
    x = 5,270.92

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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.