Home / 13,954.79-20,930.53-3,960.41

Finding the Fourth Proportional to 13,954.79, 20,930.53 and 3,960.41

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Solution

The fourth proportional to 13,954.79, 20,930.53 and 3,960.41 is: 5,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.79 : 20,930.53 = 3,960.41 : x
  2. Step 2: Convert to fraction form
    13,954.79/20,930.53 = 3,960.41/x
  3. Step 3: Cross multiply
    13,954.79x = 20,930.53 × 3,960.41
  4. Step 4: Simplify right side
    13,954.79x = 82,893,460.52
  5. Step 5: Solve for x
    x = 82,893,460.52/13,954.79
  6. Step 6: Final answer
    x = 5,940.15

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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.