Home / 12,660.36-18,971.01-5,258.58

Finding the Fourth Proportional to 12,660.36, 18,971.01 and 5,258.58

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Solution

The fourth proportional to 12,660.36, 18,971.01 and 5,258.58 is: 7,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.36 : 18,971.01 = 5,258.58 : x
  2. Step 2: Convert to fraction form
    12,660.36/18,971.01 = 5,258.58/x
  3. Step 3: Cross multiply
    12,660.36x = 18,971.01 × 5,258.58
  4. Step 4: Simplify right side
    12,660.36x = 99,760,573.77
  5. Step 5: Solve for x
    x = 99,760,573.77/12,660.36
  6. Step 6: Final answer
    x = 7,879.76

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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.