Home / 11,990.99-17,975.53-4,195.55

Finding the Fourth Proportional to 11,990.99, 17,975.53 and 4,195.55

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Solution

The fourth proportional to 11,990.99, 17,975.53 and 4,195.55 is: 6,289.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.99 : 17,975.53 = 4,195.55 : x
  2. Step 2: Convert to fraction form
    11,990.99/17,975.53 = 4,195.55/x
  3. Step 3: Cross multiply
    11,990.99x = 17,975.53 × 4,195.55
  4. Step 4: Simplify right side
    11,990.99x = 75,417,224.40
  5. Step 5: Solve for x
    x = 75,417,224.40/11,990.99
  6. Step 6: Final answer
    x = 6,289.49

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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.