Home / 20,121.42-30,185.01-6,271.50

Finding the Fourth Proportional to 20,121.42, 30,185.01 and 6,271.50

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Solution

The fourth proportional to 20,121.42, 30,185.01 and 6,271.50 is: 9,408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.42 : 30,185.01 = 6,271.50 : x
  2. Step 2: Convert to fraction form
    20,121.42/30,185.01 = 6,271.50/x
  3. Step 3: Cross multiply
    20,121.42x = 30,185.01 × 6,271.50
  4. Step 4: Simplify right side
    20,121.42x = 189,305,290.22
  5. Step 5: Solve for x
    x = 189,305,290.22/20,121.42
  6. Step 6: Final answer
    x = 9,408.15

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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.