Home / 21,744.86-29,996.93-12,786.66

Finding the Fourth Proportional to 21,744.86, 29,996.93 and 12,786.66

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Solution

The fourth proportional to 21,744.86, 29,996.93 and 12,786.66 is: 17,639.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.86 : 29,996.93 = 12,786.66 : x
  2. Step 2: Convert to fraction form
    21,744.86/29,996.93 = 12,786.66/x
  3. Step 3: Cross multiply
    21,744.86x = 29,996.93 × 12,786.66
  4. Step 4: Simplify right side
    21,744.86x = 383,560,576.92
  5. Step 5: Solve for x
    x = 383,560,576.92/21,744.86
  6. Step 6: Final answer
    x = 17,639.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.