Home / 13,728.75-18,940.26-8,954.25

Finding the Fourth Proportional to 13,728.75, 18,940.26 and 8,954.25

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Solution

The fourth proportional to 13,728.75, 18,940.26 and 8,954.25 is: 12,353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.75 : 18,940.26 = 8,954.25 : x
  2. Step 2: Convert to fraction form
    13,728.75/18,940.26 = 8,954.25/x
  3. Step 3: Cross multiply
    13,728.75x = 18,940.26 × 8,954.25
  4. Step 4: Simplify right side
    13,728.75x = 169,595,823.11
  5. Step 5: Solve for x
    x = 169,595,823.11/13,728.75
  6. Step 6: Final answer
    x = 12,353.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.