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Finding the Fourth Proportional to 36,379.81, 50,203.40 and 21,281.41

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Solution

The fourth proportional to 36,379.81, 50,203.40 and 21,281.41 is: 29,367.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,379.81 : 50,203.40 = 21,281.41 : x
  2. Step 2: Convert to fraction form
    36,379.81/50,203.40 = 21,281.41/x
  3. Step 3: Cross multiply
    36,379.81x = 50,203.40 × 21,281.41
  4. Step 4: Simplify right side
    36,379.81x = 1,068,399,032.39
  5. Step 5: Solve for x
    x = 1,068,399,032.39/36,379.81
  6. Step 6: Final answer
    x = 29,367.91

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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.