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Finding the Fourth Proportional to 11,993.13, 17,989.29 and 3,228.12

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Solution

The fourth proportional to 11,993.13, 17,989.29 and 3,228.12 is: 4,842.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.13 : 17,989.29 = 3,228.12 : x
  2. Step 2: Convert to fraction form
    11,993.13/17,989.29 = 3,228.12/x
  3. Step 3: Cross multiply
    11,993.13x = 17,989.29 × 3,228.12
  4. Step 4: Simplify right side
    11,993.13x = 58,071,586.83
  5. Step 5: Solve for x
    x = 58,071,586.83/11,993.13
  6. Step 6: Final answer
    x = 4,842.07

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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.