Home / 11,921.85-17,875.81-3,599.37

Finding the Fourth Proportional to 11,921.85, 17,875.81 and 3,599.37

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Solution

The fourth proportional to 11,921.85, 17,875.81 and 3,599.37 is: 5,396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.85 : 17,875.81 = 3,599.37 : x
  2. Step 2: Convert to fraction form
    11,921.85/17,875.81 = 3,599.37/x
  3. Step 3: Cross multiply
    11,921.85x = 17,875.81 × 3,599.37
  4. Step 4: Simplify right side
    11,921.85x = 64,341,645.24
  5. Step 5: Solve for x
    x = 64,341,645.24/11,921.85
  6. Step 6: Final answer
    x = 5,396.95

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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.