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Finding the Fourth Proportional to 19,243.95, 28,843.51 and 8,146.95

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Solution

The fourth proportional to 19,243.95, 28,843.51 and 8,146.95 is: 12,210.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.95 : 28,843.51 = 8,146.95 : x
  2. Step 2: Convert to fraction form
    19,243.95/28,843.51 = 8,146.95/x
  3. Step 3: Cross multiply
    19,243.95x = 28,843.51 × 8,146.95
  4. Step 4: Simplify right side
    19,243.95x = 234,986,469.21
  5. Step 5: Solve for x
    x = 234,986,469.21/19,243.95
  6. Step 6: Final answer
    x = 12,210.93

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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.