Home / 20,151.80-30,238.20-9,633.68

Finding the Fourth Proportional to 20,151.80, 30,238.20 and 9,633.68

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Solution

The fourth proportional to 20,151.80, 30,238.20 and 9,633.68 is: 14,455.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.80 : 30,238.20 = 9,633.68 : x
  2. Step 2: Convert to fraction form
    20,151.80/30,238.20 = 9,633.68/x
  3. Step 3: Cross multiply
    20,151.80x = 30,238.20 × 9,633.68
  4. Step 4: Simplify right side
    20,151.80x = 291,305,142.58
  5. Step 5: Solve for x
    x = 291,305,142.58/20,151.80
  6. Step 6: Final answer
    x = 14,455.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.