Home / 13,738.26-18,959.82-7,770.54

Finding the Fourth Proportional to 13,738.26, 18,959.82 and 7,770.54

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Solution

The fourth proportional to 13,738.26, 18,959.82 and 7,770.54 is: 10,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.26 : 18,959.82 = 7,770.54 : x
  2. Step 2: Convert to fraction form
    13,738.26/18,959.82 = 7,770.54/x
  3. Step 3: Cross multiply
    13,738.26x = 18,959.82 × 7,770.54
  4. Step 4: Simplify right side
    13,738.26x = 147,328,039.70
  5. Step 5: Solve for x
    x = 147,328,039.70/13,738.26
  6. Step 6: Final answer
    x = 10,723.92

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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.