Home / 13,940.91-20,908.57-5,173.77

Finding the Fourth Proportional to 13,940.91, 20,908.57 and 5,173.77

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Solution

The fourth proportional to 13,940.91, 20,908.57 and 5,173.77 is: 7,759.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.91 : 20,908.57 = 5,173.77 : x
  2. Step 2: Convert to fraction form
    13,940.91/20,908.57 = 5,173.77/x
  3. Step 3: Cross multiply
    13,940.91x = 20,908.57 × 5,173.77
  4. Step 4: Simplify right side
    13,940.91x = 108,176,132.21
  5. Step 5: Solve for x
    x = 108,176,132.21/13,940.91
  6. Step 6: Final answer
    x = 7,759.62

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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.