Home / 12,179.76-18,258.12-3,966

Finding the Fourth Proportional to 12,179.76, 18,258.12 and 3,966

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Solution

The fourth proportional to 12,179.76, 18,258.12 and 3,966 is: 5,945.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.76 : 18,258.12 = 3,966 : x
  2. Step 2: Convert to fraction form
    12,179.76/18,258.12 = 3,966/x
  3. Step 3: Cross multiply
    12,179.76x = 18,258.12 × 3,966
  4. Step 4: Simplify right side
    12,179.76x = 72,411,703.92
  5. Step 5: Solve for x
    x = 72,411,703.92/12,179.76
  6. Step 6: Final answer
    x = 5,945.25

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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.