Home / 12,918.33-19,370.21-4,480.88

Finding the Fourth Proportional to 12,918.33, 19,370.21 and 4,480.88

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Solution

The fourth proportional to 12,918.33, 19,370.21 and 4,480.88 is: 6,718.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.33 : 19,370.21 = 4,480.88 : x
  2. Step 2: Convert to fraction form
    12,918.33/19,370.21 = 4,480.88/x
  3. Step 3: Cross multiply
    12,918.33x = 19,370.21 × 4,480.88
  4. Step 4: Simplify right side
    12,918.33x = 86,795,586.58
  5. Step 5: Solve for x
    x = 86,795,586.58/12,918.33
  6. Step 6: Final answer
    x = 6,718.79

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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.