Home / 13,738.12-18,958.66-7,450.60

Finding the Fourth Proportional to 13,738.12, 18,958.66 and 7,450.60

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Solution

The fourth proportional to 13,738.12, 18,958.66 and 7,450.60 is: 10,281.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.12 : 18,958.66 = 7,450.60 : x
  2. Step 2: Convert to fraction form
    13,738.12/18,958.66 = 7,450.60/x
  3. Step 3: Cross multiply
    13,738.12x = 18,958.66 × 7,450.60
  4. Step 4: Simplify right side
    13,738.12x = 141,253,392.20
  5. Step 5: Solve for x
    x = 141,253,392.20/13,738.12
  6. Step 6: Final answer
    x = 10,281.86

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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.