Home / 18,078.84-27,121.91-6,400.26

Finding the Fourth Proportional to 18,078.84, 27,121.91 and 6,400.26

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Solution

The fourth proportional to 18,078.84, 27,121.91 and 6,400.26 is: 9,601.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.84 : 27,121.91 = 6,400.26 : x
  2. Step 2: Convert to fraction form
    18,078.84/27,121.91 = 6,400.26/x
  3. Step 3: Cross multiply
    18,078.84x = 27,121.91 × 6,400.26
  4. Step 4: Simplify right side
    18,078.84x = 173,587,243.70
  5. Step 5: Solve for x
    x = 173,587,243.70/18,078.84
  6. Step 6: Final answer
    x = 9,601.68

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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.