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Finding the Fourth Proportional to 36,309.64, 50,104.95 and 20,393.80

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Solution

The fourth proportional to 36,309.64, 50,104.95 and 20,393.80 is: 28,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,309.64 : 50,104.95 = 20,393.80 : x
  2. Step 2: Convert to fraction form
    36,309.64/50,104.95 = 20,393.80/x
  3. Step 3: Cross multiply
    36,309.64x = 50,104.95 × 20,393.80
  4. Step 4: Simplify right side
    36,309.64x = 1,021,830,329.31
  5. Step 5: Solve for x
    x = 1,021,830,329.31/36,309.64
  6. Step 6: Final answer
    x = 28,142.12

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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.