Home / 11,929.75-17,889.07-4,428.09

Finding the Fourth Proportional to 11,929.75, 17,889.07 and 4,428.09

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Solution

The fourth proportional to 11,929.75, 17,889.07 and 4,428.09 is: 6,640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.75 : 17,889.07 = 4,428.09 : x
  2. Step 2: Convert to fraction form
    11,929.75/17,889.07 = 4,428.09/x
  3. Step 3: Cross multiply
    11,929.75x = 17,889.07 × 4,428.09
  4. Step 4: Simplify right side
    11,929.75x = 79,214,411.98
  5. Step 5: Solve for x
    x = 79,214,411.98/11,929.75
  6. Step 6: Final answer
    x = 6,640.07

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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.