Home / 11,929.28-17,889.36-3,922.18

Finding the Fourth Proportional to 11,929.28, 17,889.36 and 3,922.18

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Solution

The fourth proportional to 11,929.28, 17,889.36 and 3,922.18 is: 5,881.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.28 : 17,889.36 = 3,922.18 : x
  2. Step 2: Convert to fraction form
    11,929.28/17,889.36 = 3,922.18/x
  3. Step 3: Cross multiply
    11,929.28x = 17,889.36 × 3,922.18
  4. Step 4: Simplify right side
    11,929.28x = 70,165,230.57
  5. Step 5: Solve for x
    x = 70,165,230.57/11,929.28
  6. Step 6: Final answer
    x = 5,881.77

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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.