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Finding the Fourth Proportional to 36,855.58, 50,860.70 and 20,940.05

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Solution

The fourth proportional to 36,855.58, 50,860.70 and 20,940.05 is: 28,897.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,855.58 : 50,860.70 = 20,940.05 : x
  2. Step 2: Convert to fraction form
    36,855.58/50,860.70 = 20,940.05/x
  3. Step 3: Cross multiply
    36,855.58x = 50,860.70 × 20,940.05
  4. Step 4: Simplify right side
    36,855.58x = 1,065,025,601.04
  5. Step 5: Solve for x
    x = 1,065,025,601.04/36,855.58
  6. Step 6: Final answer
    x = 28,897.27

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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.