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Finding the Fourth Proportional to 11,990.94, 17,989.46 and 4,199.56

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Solution

The fourth proportional to 11,990.94, 17,989.46 and 4,199.56 is: 6,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.94 : 17,989.46 = 4,199.56 : x
  2. Step 2: Convert to fraction form
    11,990.94/17,989.46 = 4,199.56/x
  3. Step 3: Cross multiply
    11,990.94x = 17,989.46 × 4,199.56
  4. Step 4: Simplify right side
    11,990.94x = 75,547,816.64
  5. Step 5: Solve for x
    x = 75,547,816.64/11,990.94
  6. Step 6: Final answer
    x = 6,300.41

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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.