Home / 20,571.81-30,852.91-5,782.15

Finding the Fourth Proportional to 20,571.81, 30,852.91 and 5,782.15

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Solution

The fourth proportional to 20,571.81, 30,852.91 and 5,782.15 is: 8,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.81 : 30,852.91 = 5,782.15 : x
  2. Step 2: Convert to fraction form
    20,571.81/30,852.91 = 5,782.15/x
  3. Step 3: Cross multiply
    20,571.81x = 30,852.91 × 5,782.15
  4. Step 4: Simplify right side
    20,571.81x = 178,396,153.56
  5. Step 5: Solve for x
    x = 178,396,153.56/20,571.81
  6. Step 6: Final answer
    x = 8,671.87

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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.