Home / 13,821.63-20,732.37-3,960.89

Finding the Fourth Proportional to 13,821.63, 20,732.37 and 3,960.89

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Solution

The fourth proportional to 13,821.63, 20,732.37 and 3,960.89 is: 5,941.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.63 : 20,732.37 = 3,960.89 : x
  2. Step 2: Convert to fraction form
    13,821.63/20,732.37 = 3,960.89/x
  3. Step 3: Cross multiply
    13,821.63x = 20,732.37 × 3,960.89
  4. Step 4: Simplify right side
    13,821.63x = 82,118,637.01
  5. Step 5: Solve for x
    x = 82,118,637.01/13,821.63
  6. Step 6: Final answer
    x = 5,941.31

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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.