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Finding the Fourth Proportional to 29,262.40, 43,890.36 and 8,485.90

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Solution

The fourth proportional to 29,262.40, 43,890.36 and 8,485.90 is: 12,727.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,262.40 : 43,890.36 = 8,485.90 : x
  2. Step 2: Convert to fraction form
    29,262.40/43,890.36 = 8,485.90/x
  3. Step 3: Cross multiply
    29,262.40x = 43,890.36 × 8,485.90
  4. Step 4: Simplify right side
    29,262.40x = 372,449,205.92
  5. Step 5: Solve for x
    x = 372,449,205.92/29,262.40
  6. Step 6: Final answer
    x = 12,727.91

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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.