Home / 13,976.32-20,968.13-4,115.28

Finding the Fourth Proportional to 13,976.32, 20,968.13 and 4,115.28

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Solution

The fourth proportional to 13,976.32, 20,968.13 and 4,115.28 is: 6,173.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,976.32 : 20,968.13 = 4,115.28 : x
  2. Step 2: Convert to fraction form
    13,976.32/20,968.13 = 4,115.28/x
  3. Step 3: Cross multiply
    13,976.32x = 20,968.13 × 4,115.28
  4. Step 4: Simplify right side
    13,976.32x = 86,289,726.03
  5. Step 5: Solve for x
    x = 86,289,726.03/13,976.32
  6. Step 6: Final answer
    x = 6,173.99

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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.