Home / 12,940.75-19,412.21-3,706.75

Finding the Fourth Proportional to 12,940.75, 19,412.21 and 3,706.75

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Solution

The fourth proportional to 12,940.75, 19,412.21 and 3,706.75 is: 5,560.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.75 : 19,412.21 = 3,706.75 : x
  2. Step 2: Convert to fraction form
    12,940.75/19,412.21 = 3,706.75/x
  3. Step 3: Cross multiply
    12,940.75x = 19,412.21 × 3,706.75
  4. Step 4: Simplify right side
    12,940.75x = 71,956,209.42
  5. Step 5: Solve for x
    x = 71,956,209.42/12,940.75
  6. Step 6: Final answer
    x = 5,560.44

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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.