Home / 13,738.37-18,958.72-7,769.81

Finding the Fourth Proportional to 13,738.37, 18,958.72 and 7,769.81

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Solution

The fourth proportional to 13,738.37, 18,958.72 and 7,769.81 is: 10,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.37 : 18,958.72 = 7,769.81 : x
  2. Step 2: Convert to fraction form
    13,738.37/18,958.72 = 7,769.81/x
  3. Step 3: Cross multiply
    13,738.37x = 18,958.72 × 7,769.81
  4. Step 4: Simplify right side
    13,738.37x = 147,305,652.24
  5. Step 5: Solve for x
    x = 147,305,652.24/13,738.37
  6. Step 6: Final answer
    x = 10,722.21

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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.