Home / 19,396.89-29,108.07-10,638

Finding the Fourth Proportional to 19,396.89, 29,108.07 and 10,638

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Solution

The fourth proportional to 19,396.89, 29,108.07 and 10,638 is: 15,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,396.89 : 29,108.07 = 10,638 : x
  2. Step 2: Convert to fraction form
    19,396.89/29,108.07 = 10,638/x
  3. Step 3: Cross multiply
    19,396.89x = 29,108.07 × 10,638
  4. Step 4: Simplify right side
    19,396.89x = 309,651,648.66
  5. Step 5: Solve for x
    x = 309,651,648.66/19,396.89
  6. Step 6: Final answer
    x = 15,963.98

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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.