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Finding the Fourth Proportional to 16,392.36, 22,620.78 and 8,940.36

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Solution

The fourth proportional to 16,392.36, 22,620.78 and 8,940.36 is: 12,337.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,392.36 : 22,620.78 = 8,940.36 : x
  2. Step 2: Convert to fraction form
    16,392.36/22,620.78 = 8,940.36/x
  3. Step 3: Cross multiply
    16,392.36x = 22,620.78 × 8,940.36
  4. Step 4: Simplify right side
    16,392.36x = 202,237,916.68
  5. Step 5: Solve for x
    x = 202,237,916.68/16,392.36
  6. Step 6: Final answer
    x = 12,337.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.