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Finding the Fourth Proportional to 36,855.84, 50,861.06 and 20,940.30

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Solution

The fourth proportional to 36,855.84, 50,861.06 and 20,940.30 is: 28,897.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,855.84 : 50,861.06 = 20,940.30 : x
  2. Step 2: Convert to fraction form
    36,855.84/50,861.06 = 20,940.30/x
  3. Step 3: Cross multiply
    36,855.84x = 50,861.06 × 20,940.30
  4. Step 4: Simplify right side
    36,855.84x = 1,065,045,854.72
  5. Step 5: Solve for x
    x = 1,065,045,854.72/36,855.84
  6. Step 6: Final answer
    x = 28,897.61

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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.