Home / 11,722.12-17,579.56-3,929.12

Finding the Fourth Proportional to 11,722.12, 17,579.56 and 3,929.12

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Solution

The fourth proportional to 11,722.12, 17,579.56 and 3,929.12 is: 5,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,722.12 : 17,579.56 = 3,929.12 : x
  2. Step 2: Convert to fraction form
    11,722.12/17,579.56 = 3,929.12/x
  3. Step 3: Cross multiply
    11,722.12x = 17,579.56 × 3,929.12
  4. Step 4: Simplify right side
    11,722.12x = 69,072,200.79
  5. Step 5: Solve for x
    x = 69,072,200.79/11,722.12
  6. Step 6: Final answer
    x = 5,892.47

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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.