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Finding the Fourth Proportional to 21,940.64, 32,916.72 and 8,793.44

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Solution

The fourth proportional to 21,940.64, 32,916.72 and 8,793.44 is: 13,192.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,940.64 : 32,916.72 = 8,793.44 : x
  2. Step 2: Convert to fraction form
    21,940.64/32,916.72 = 8,793.44/x
  3. Step 3: Cross multiply
    21,940.64x = 32,916.72 × 8,793.44
  4. Step 4: Simplify right side
    21,940.64x = 289,451,202.32
  5. Step 5: Solve for x
    x = 289,451,202.32/21,940.64
  6. Step 6: Final answer
    x = 13,192.47

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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.