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Finding the Fourth Proportional to 20,633.34, 30,950.07 and 7,485.73

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Solution

The fourth proportional to 20,633.34, 30,950.07 and 7,485.73 is: 11,228.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.34 : 30,950.07 = 7,485.73 : x
  2. Step 2: Convert to fraction form
    20,633.34/30,950.07 = 7,485.73/x
  3. Step 3: Cross multiply
    20,633.34x = 30,950.07 × 7,485.73
  4. Step 4: Simplify right side
    20,633.34x = 231,683,762.05
  5. Step 5: Solve for x
    x = 231,683,762.05/20,633.34
  6. Step 6: Final answer
    x = 11,228.61

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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.