Home / 13,738.14-18,958.50-7,770.97

Finding the Fourth Proportional to 13,738.14, 18,958.50 and 7,770.97

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Solution

The fourth proportional to 13,738.14, 18,958.50 and 7,770.97 is: 10,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.14 : 18,958.50 = 7,770.97 : x
  2. Step 2: Convert to fraction form
    13,738.14/18,958.50 = 7,770.97/x
  3. Step 3: Cross multiply
    13,738.14x = 18,958.50 × 7,770.97
  4. Step 4: Simplify right side
    13,738.14x = 147,325,934.75
  5. Step 5: Solve for x
    x = 147,325,934.75/13,738.14
  6. Step 6: Final answer
    x = 10,723.87

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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.