Home / 20,396.28-30,571.38-10,015.32

Finding the Fourth Proportional to 20,396.28, 30,571.38 and 10,015.32

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Solution

The fourth proportional to 20,396.28, 30,571.38 and 10,015.32 is: 15,011.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.28 : 30,571.38 = 10,015.32 : x
  2. Step 2: Convert to fraction form
    20,396.28/30,571.38 = 10,015.32/x
  3. Step 3: Cross multiply
    20,396.28x = 30,571.38 × 10,015.32
  4. Step 4: Simplify right side
    20,396.28x = 306,182,153.54
  5. Step 5: Solve for x
    x = 306,182,153.54/20,396.28
  6. Step 6: Final answer
    x = 15,011.67

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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.