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Finding the Fourth Proportional to 36,804.21, 50,791.35 and 20,890.14

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Solution

The fourth proportional to 36,804.21, 50,791.35 and 20,890.14 is: 28,829.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,804.21 : 50,791.35 = 20,890.14 : x
  2. Step 2: Convert to fraction form
    36,804.21/50,791.35 = 20,890.14/x
  3. Step 3: Cross multiply
    36,804.21x = 50,791.35 × 20,890.14
  4. Step 4: Simplify right side
    36,804.21x = 1,061,038,412.29
  5. Step 5: Solve for x
    x = 1,061,038,412.29/36,804.21
  6. Step 6: Final answer
    x = 28,829.27

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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.