Home / 13,738.68-18,956.23-7,769.05

Finding the Fourth Proportional to 13,738.68, 18,956.23 and 7,769.05

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Solution

The fourth proportional to 13,738.68, 18,956.23 and 7,769.05 is: 10,719.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.68 : 18,956.23 = 7,769.05 : x
  2. Step 2: Convert to fraction form
    13,738.68/18,956.23 = 7,769.05/x
  3. Step 3: Cross multiply
    13,738.68x = 18,956.23 × 7,769.05
  4. Step 4: Simplify right side
    13,738.68x = 147,271,831.87
  5. Step 5: Solve for x
    x = 147,271,831.87/13,738.68
  6. Step 6: Final answer
    x = 10,719.50

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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.