Home / 12,929.16-19,396.20-4,161.72

Finding the Fourth Proportional to 12,929.16, 19,396.20 and 4,161.72

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Solution

The fourth proportional to 12,929.16, 19,396.20 and 4,161.72 is: 6,243.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.16 : 19,396.20 = 4,161.72 : x
  2. Step 2: Convert to fraction form
    12,929.16/19,396.20 = 4,161.72/x
  3. Step 3: Cross multiply
    12,929.16x = 19,396.20 × 4,161.72
  4. Step 4: Simplify right side
    12,929.16x = 80,721,553.46
  5. Step 5: Solve for x
    x = 80,721,553.46/12,929.16
  6. Step 6: Final answer
    x = 6,243.37

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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.