Home / 19,409.96-29,121.10-6,929.72

Finding the Fourth Proportional to 19,409.96, 29,121.10 and 6,929.72

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Solution

The fourth proportional to 19,409.96, 29,121.10 and 6,929.72 is: 10,396.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.96 : 29,121.10 = 6,929.72 : x
  2. Step 2: Convert to fraction form
    19,409.96/29,121.10 = 6,929.72/x
  3. Step 3: Cross multiply
    19,409.96x = 29,121.10 × 6,929.72
  4. Step 4: Simplify right side
    19,409.96x = 201,801,124.57
  5. Step 5: Solve for x
    x = 201,801,124.57/19,409.96
  6. Step 6: Final answer
    x = 10,396.78

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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.