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Finding the Fourth Proportional to 36,295.52, 50,087.85 and 20,381

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Solution

The fourth proportional to 36,295.52, 50,087.85 and 20,381 is: 28,125.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,295.52 : 50,087.85 = 20,381 : x
  2. Step 2: Convert to fraction form
    36,295.52/50,087.85 = 20,381/x
  3. Step 3: Cross multiply
    36,295.52x = 50,087.85 × 20,381
  4. Step 4: Simplify right side
    36,295.52x = 1,020,840,470.85
  5. Step 5: Solve for x
    x = 1,020,840,470.85/36,295.52
  6. Step 6: Final answer
    x = 28,125.80

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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.