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Finding the Fourth Proportional to 19,243.94, 28,846.13 and 12,229.11

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Solution

The fourth proportional to 19,243.94, 28,846.13 and 12,229.11 is: 18,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.94 : 28,846.13 = 12,229.11 : x
  2. Step 2: Convert to fraction form
    19,243.94/28,846.13 = 12,229.11/x
  3. Step 3: Cross multiply
    19,243.94x = 28,846.13 × 12,229.11
  4. Step 4: Simplify right side
    19,243.94x = 352,762,435.70
  5. Step 5: Solve for x
    x = 352,762,435.70/19,243.94
  6. Step 6: Final answer
    x = 18,331.10

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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.