Home / 12,057.20-18,091.20-4,271.60

Finding the Fourth Proportional to 12,057.20, 18,091.20 and 4,271.60

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Solution

The fourth proportional to 12,057.20, 18,091.20 and 4,271.60 is: 6,409.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,057.20 : 18,091.20 = 4,271.60 : x
  2. Step 2: Convert to fraction form
    12,057.20/18,091.20 = 4,271.60/x
  3. Step 3: Cross multiply
    12,057.20x = 18,091.20 × 4,271.60
  4. Step 4: Simplify right side
    12,057.20x = 77,278,369.92
  5. Step 5: Solve for x
    x = 77,278,369.92/12,057.20
  6. Step 6: Final answer
    x = 6,409.31

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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.