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Finding the Fourth Proportional to 18,603.26, 27,908.96 and 6,122.78

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Solution

The fourth proportional to 18,603.26, 27,908.96 and 6,122.78 is: 9,185.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.26 : 27,908.96 = 6,122.78 : x
  2. Step 2: Convert to fraction form
    18,603.26/27,908.96 = 6,122.78/x
  3. Step 3: Cross multiply
    18,603.26x = 27,908.96 × 6,122.78
  4. Step 4: Simplify right side
    18,603.26x = 170,880,251.95
  5. Step 5: Solve for x
    x = 170,880,251.95/18,603.26
  6. Step 6: Final answer
    x = 9,185.50

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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.