Home / 18,138.33-27,208.44-4,990.41

Finding the Fourth Proportional to 18,138.33, 27,208.44 and 4,990.41

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Solution

The fourth proportional to 18,138.33, 27,208.44 and 4,990.41 is: 7,485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.33 : 27,208.44 = 4,990.41 : x
  2. Step 2: Convert to fraction form
    18,138.33/27,208.44 = 4,990.41/x
  3. Step 3: Cross multiply
    18,138.33x = 27,208.44 × 4,990.41
  4. Step 4: Simplify right side
    18,138.33x = 135,781,271.06
  5. Step 5: Solve for x
    x = 135,781,271.06/18,138.33
  6. Step 6: Final answer
    x = 7,485.87

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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.