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Finding the Fourth Proportional to 21,937.74, 32,855.22 and 10,808.64

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Solution

The fourth proportional to 21,937.74, 32,855.22 and 10,808.64 is: 16,187.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.74 : 32,855.22 = 10,808.64 : x
  2. Step 2: Convert to fraction form
    21,937.74/32,855.22 = 10,808.64/x
  3. Step 3: Cross multiply
    21,937.74x = 32,855.22 × 10,808.64
  4. Step 4: Simplify right side
    21,937.74x = 355,120,245.10
  5. Step 5: Solve for x
    x = 355,120,245.10/21,937.74
  6. Step 6: Final answer
    x = 16,187.64

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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.