Home / 13,842.40-20,760.54-3,979.48

Finding the Fourth Proportional to 13,842.40, 20,760.54 and 3,979.48

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Solution

The fourth proportional to 13,842.40, 20,760.54 and 3,979.48 is: 5,968.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.40 : 20,760.54 = 3,979.48 : x
  2. Step 2: Convert to fraction form
    13,842.40/20,760.54 = 3,979.48/x
  3. Step 3: Cross multiply
    13,842.40x = 20,760.54 × 3,979.48
  4. Step 4: Simplify right side
    13,842.40x = 82,616,153.72
  5. Step 5: Solve for x
    x = 82,616,153.72/13,842.40
  6. Step 6: Final answer
    x = 5,968.34

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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.