Home / 30,571.54-45,857.31-20,180.86

Finding the Fourth Proportional to 30,571.54, 45,857.31 and 20,180.86

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Solution

The fourth proportional to 30,571.54, 45,857.31 and 20,180.86 is: 30,271.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571.54 : 45,857.31 = 20,180.86 : x
  2. Step 2: Convert to fraction form
    30,571.54/45,857.31 = 20,180.86/x
  3. Step 3: Cross multiply
    30,571.54x = 45,857.31 × 20,180.86
  4. Step 4: Simplify right side
    30,571.54x = 925,439,953.09
  5. Step 5: Solve for x
    x = 925,439,953.09/30,571.54
  6. Step 6: Final answer
    x = 30,271.29

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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.