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Finding the Fourth Proportional to 36,520.70, 50,394 and 21,409.88

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Solution

The fourth proportional to 36,520.70, 50,394 and 21,409.88 is: 29,542.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,520.70 : 50,394 = 21,409.88 : x
  2. Step 2: Convert to fraction form
    36,520.70/50,394 = 21,409.88/x
  3. Step 3: Cross multiply
    36,520.70x = 50,394 × 21,409.88
  4. Step 4: Simplify right side
    36,520.70x = 1,078,929,492.72
  5. Step 5: Solve for x
    x = 1,078,929,492.72/36,520.70
  6. Step 6: Final answer
    x = 29,542.96

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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.