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Finding the Fourth Proportional to 36,340.80, 50,150.79 and 20,424.30

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Solution

The fourth proportional to 36,340.80, 50,150.79 and 20,424.30 is: 28,185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,340.80 : 50,150.79 = 20,424.30 : x
  2. Step 2: Convert to fraction form
    36,340.80/50,150.79 = 20,424.30/x
  3. Step 3: Cross multiply
    36,340.80x = 50,150.79 × 20,424.30
  4. Step 4: Simplify right side
    36,340.80x = 1,024,294,780.20
  5. Step 5: Solve for x
    x = 1,024,294,780.20/36,340.80
  6. Step 6: Final answer
    x = 28,185.81

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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.