Home / 13,940.42-20,909.88-10,196.06

Finding the Fourth Proportional to 13,940.42, 20,909.88 and 10,196.06

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Solution

The fourth proportional to 13,940.42, 20,909.88 and 10,196.06 is: 15,293.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.42 : 20,909.88 = 10,196.06 : x
  2. Step 2: Convert to fraction form
    13,940.42/20,909.88 = 10,196.06/x
  3. Step 3: Cross multiply
    13,940.42x = 20,909.88 × 10,196.06
  4. Step 4: Simplify right side
    13,940.42x = 213,198,391.07
  5. Step 5: Solve for x
    x = 213,198,391.07/13,940.42
  6. Step 6: Final answer
    x = 15,293.54

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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.