Home / 18,976.58-28,467.93-7,131.28

Finding the Fourth Proportional to 18,976.58, 28,467.93 and 7,131.28

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Solution

The fourth proportional to 18,976.58, 28,467.93 and 7,131.28 is: 10,698.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,976.58 : 28,467.93 = 7,131.28 : x
  2. Step 2: Convert to fraction form
    18,976.58/28,467.93 = 7,131.28/x
  3. Step 3: Cross multiply
    18,976.58x = 28,467.93 × 7,131.28
  4. Step 4: Simplify right side
    18,976.58x = 203,012,637.51
  5. Step 5: Solve for x
    x = 203,012,637.51/18,976.58
  6. Step 6: Final answer
    x = 10,698.06

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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.