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Finding the Fourth Proportional to 36,412.60, 54,620.70 and 18,916.60

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Solution

The fourth proportional to 36,412.60, 54,620.70 and 18,916.60 is: 28,375.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,412.60 : 54,620.70 = 18,916.60 : x
  2. Step 2: Convert to fraction form
    36,412.60/54,620.70 = 18,916.60/x
  3. Step 3: Cross multiply
    36,412.60x = 54,620.70 × 18,916.60
  4. Step 4: Simplify right side
    36,412.60x = 1,033,237,933.62
  5. Step 5: Solve for x
    x = 1,033,237,933.62/36,412.60
  6. Step 6: Final answer
    x = 28,375.84

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1.5x scale

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.