Home / 12,912.44-19,388.10-7,372.04

Finding the Fourth Proportional to 12,912.44, 19,388.10 and 7,372.04

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Solution

The fourth proportional to 12,912.44, 19,388.10 and 7,372.04 is: 11,069.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.44 : 19,388.10 = 7,372.04 : x
  2. Step 2: Convert to fraction form
    12,912.44/19,388.10 = 7,372.04/x
  3. Step 3: Cross multiply
    12,912.44x = 19,388.10 × 7,372.04
  4. Step 4: Simplify right side
    12,912.44x = 142,929,848.72
  5. Step 5: Solve for x
    x = 142,929,848.72/12,912.44
  6. Step 6: Final answer
    x = 11,069.16

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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.