Home / 12,821.91-19,207.94-7,258.43

Finding the Fourth Proportional to 12,821.91, 19,207.94 and 7,258.43

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Solution

The fourth proportional to 12,821.91, 19,207.94 and 7,258.43 is: 10,873.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.91 : 19,207.94 = 7,258.43 : x
  2. Step 2: Convert to fraction form
    12,821.91/19,207.94 = 7,258.43/x
  3. Step 3: Cross multiply
    12,821.91x = 19,207.94 × 7,258.43
  4. Step 4: Simplify right side
    12,821.91x = 139,419,355.60
  5. Step 5: Solve for x
    x = 139,419,355.60/12,821.91
  6. Step 6: Final answer
    x = 10,873.52

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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.