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Finding the Fourth Proportional to 18,603.95, 27,900.41 and 6,121.67

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Solution

The fourth proportional to 18,603.95, 27,900.41 and 6,121.67 is: 9,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.95 : 27,900.41 = 6,121.67 : x
  2. Step 2: Convert to fraction form
    18,603.95/27,900.41 = 6,121.67/x
  3. Step 3: Cross multiply
    18,603.95x = 27,900.41 × 6,121.67
  4. Step 4: Simplify right side
    18,603.95x = 170,796,932.77
  5. Step 5: Solve for x
    x = 170,796,932.77/18,603.95
  6. Step 6: Final answer
    x = 9,180.68

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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.