Home / 13,738.20-18,958.80-7,450.56

Finding the Fourth Proportional to 13,738.20, 18,958.80 and 7,450.56

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Solution

The fourth proportional to 13,738.20, 18,958.80 and 7,450.56 is: 10,281.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.20 : 18,958.80 = 7,450.56 : x
  2. Step 2: Convert to fraction form
    13,738.20/18,958.80 = 7,450.56/x
  3. Step 3: Cross multiply
    13,738.20x = 18,958.80 × 7,450.56
  4. Step 4: Simplify right side
    13,738.20x = 141,253,676.93
  5. Step 5: Solve for x
    x = 141,253,676.93/13,738.20
  6. Step 6: Final answer
    x = 10,281.82

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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.