Home / 20,571.35-30,850.63-7,422.01

Finding the Fourth Proportional to 20,571.35, 30,850.63 and 7,422.01

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Solution

The fourth proportional to 20,571.35, 30,850.63 and 7,422.01 is: 11,130.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.35 : 30,850.63 = 7,422.01 : x
  2. Step 2: Convert to fraction form
    20,571.35/30,850.63 = 7,422.01/x
  3. Step 3: Cross multiply
    20,571.35x = 30,850.63 × 7,422.01
  4. Step 4: Simplify right side
    20,571.35x = 228,973,684.37
  5. Step 5: Solve for x
    x = 228,973,684.37/20,571.35
  6. Step 6: Final answer
    x = 11,130.71

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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.