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Finding the Fourth Proportional to 21,956.94, 32,936.76 and 8,807.60

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Solution

The fourth proportional to 21,956.94, 32,936.76 and 8,807.60 is: 13,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.94 : 32,936.76 = 8,807.60 : x
  2. Step 2: Convert to fraction form
    21,956.94/32,936.76 = 8,807.60/x
  3. Step 3: Cross multiply
    21,956.94x = 32,936.76 × 8,807.60
  4. Step 4: Simplify right side
    21,956.94x = 290,093,889.72
  5. Step 5: Solve for x
    x = 290,093,889.72/21,956.94
  6. Step 6: Final answer
    x = 13,211.95

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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.