Home / 12,721.88-19,083.36-3,487.88

Finding the Fourth Proportional to 12,721.88, 19,083.36 and 3,487.88

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Solution

The fourth proportional to 12,721.88, 19,083.36 and 3,487.88 is: 5,231.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.88 : 19,083.36 = 3,487.88 : x
  2. Step 2: Convert to fraction form
    12,721.88/19,083.36 = 3,487.88/x
  3. Step 3: Cross multiply
    12,721.88x = 19,083.36 × 3,487.88
  4. Step 4: Simplify right side
    12,721.88x = 66,560,374.26
  5. Step 5: Solve for x
    x = 66,560,374.26/12,721.88
  6. Step 6: Final answer
    x = 5,231.96

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1.5x scale

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.