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Finding the Fourth Proportional to 18,661.05, 27,993.06 and 6,180.57

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Solution

The fourth proportional to 18,661.05, 27,993.06 and 6,180.57 is: 9,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.05 : 27,993.06 = 6,180.57 : x
  2. Step 2: Convert to fraction form
    18,661.05/27,993.06 = 6,180.57/x
  3. Step 3: Cross multiply
    18,661.05x = 27,993.06 × 6,180.57
  4. Step 4: Simplify right side
    18,661.05x = 173,013,066.84
  5. Step 5: Solve for x
    x = 173,013,066.84/18,661.05
  6. Step 6: Final answer
    x = 9,271.35

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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.