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Finding the Fourth Proportional to 43,855.30, 65,793.75 and 12,693.70

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Solution

The fourth proportional to 43,855.30, 65,793.75 and 12,693.70 is: 19,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,855.30 : 65,793.75 = 12,693.70 : x
  2. Step 2: Convert to fraction form
    43,855.30/65,793.75 = 12,693.70/x
  3. Step 3: Cross multiply
    43,855.30x = 65,793.75 × 12,693.70
  4. Step 4: Simplify right side
    43,855.30x = 835,166,124.38
  5. Step 5: Solve for x
    x = 835,166,124.38/43,855.30
  6. Step 6: Final answer
    x = 19,043.68

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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.