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Finding the Fourth Proportional to 21,692.52, 32,540.04 and 8,541.36

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Solution

The fourth proportional to 21,692.52, 32,540.04 and 8,541.36 is: 12,812.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,692.52 : 32,540.04 = 8,541.36 : x
  2. Step 2: Convert to fraction form
    21,692.52/32,540.04 = 8,541.36/x
  3. Step 3: Cross multiply
    21,692.52x = 32,540.04 × 8,541.36
  4. Step 4: Simplify right side
    21,692.52x = 277,936,196.05
  5. Step 5: Solve for x
    x = 277,936,196.05/21,692.52
  6. Step 6: Final answer
    x = 12,812.54

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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.