Home / 20,529.15-30,738.11-10,647.70

Finding the Fourth Proportional to 20,529.15, 30,738.11 and 10,647.70

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Solution

The fourth proportional to 20,529.15, 30,738.11 and 10,647.70 is: 15,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.15 : 30,738.11 = 10,647.70 : x
  2. Step 2: Convert to fraction form
    20,529.15/30,738.11 = 10,647.70/x
  3. Step 3: Cross multiply
    20,529.15x = 30,738.11 × 10,647.70
  4. Step 4: Simplify right side
    20,529.15x = 327,290,173.85
  5. Step 5: Solve for x
    x = 327,290,173.85/20,529.15
  6. Step 6: Final answer
    x = 15,942.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.