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Finding the Fourth Proportional to 36,408.31, 50,242.95 and 20,492.82

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Solution

The fourth proportional to 36,408.31, 50,242.95 and 20,492.82 is: 28,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,408.31 : 50,242.95 = 20,492.82 : x
  2. Step 2: Convert to fraction form
    36,408.31/50,242.95 = 20,492.82/x
  3. Step 3: Cross multiply
    36,408.31x = 50,242.95 × 20,492.82
  4. Step 4: Simplify right side
    36,408.31x = 1,029,619,730.62
  5. Step 5: Solve for x
    x = 1,029,619,730.62/36,408.31
  6. Step 6: Final answer
    x = 28,279.80

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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.