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Finding the Fourth Proportional to 36,499.80, 54,736.90 and 18,963.80

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Solution

The fourth proportional to 36,499.80, 54,736.90 and 18,963.80 is: 28,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,499.80 : 54,736.90 = 18,963.80 : x
  2. Step 2: Convert to fraction form
    36,499.80/54,736.90 = 18,963.80/x
  3. Step 3: Cross multiply
    36,499.80x = 54,736.90 × 18,963.80
  4. Step 4: Simplify right side
    36,499.80x = 1,038,019,624.22
  5. Step 5: Solve for x
    x = 1,038,019,624.22/36,499.80
  6. Step 6: Final answer
    x = 28,439.05

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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.