Home / 11,990.72-17,990.40-4,199.04

Finding the Fourth Proportional to 11,990.72, 17,990.40 and 4,199.04

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Solution

The fourth proportional to 11,990.72, 17,990.40 and 4,199.04 is: 6,300.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.72 : 17,990.40 = 4,199.04 : x
  2. Step 2: Convert to fraction form
    11,990.72/17,990.40 = 4,199.04/x
  3. Step 3: Cross multiply
    11,990.72x = 17,990.40 × 4,199.04
  4. Step 4: Simplify right side
    11,990.72x = 75,542,409.22
  5. Step 5: Solve for x
    x = 75,542,409.22/11,990.72
  6. Step 6: Final answer
    x = 6,300.07

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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.