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Finding the Fourth Proportional to 43,605.35, 65,409.30 and 12,015.89

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Solution

The fourth proportional to 43,605.35, 65,409.30 and 12,015.89 is: 18,024.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,605.35 : 65,409.30 = 12,015.89 : x
  2. Step 2: Convert to fraction form
    43,605.35/65,409.30 = 12,015.89/x
  3. Step 3: Cross multiply
    43,605.35x = 65,409.30 × 12,015.89
  4. Step 4: Simplify right side
    43,605.35x = 785,950,626.73
  5. Step 5: Solve for x
    x = 785,950,626.73/43,605.35
  6. Step 6: Final answer
    x = 18,024.18

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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.