Home / 36,321.21-50,123.31-20,405.64

Finding the Fourth Proportional to 36,321.21, 50,123.31 and 20,405.64

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Solution

The fourth proportional to 36,321.21, 50,123.31 and 20,405.64 is: 28,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,321.21 : 50,123.31 = 20,405.64 : x
  2. Step 2: Convert to fraction form
    36,321.21/50,123.31 = 20,405.64/x
  3. Step 3: Cross multiply
    36,321.21x = 50,123.31 × 20,405.64
  4. Step 4: Simplify right side
    36,321.21x = 1,022,798,219.47
  5. Step 5: Solve for x
    x = 1,022,798,219.47/36,321.21
  6. Step 6: Final answer
    x = 28,159.81

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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.