Home / 11,930.44-17,904.30-7,981.96

Finding the Fourth Proportional to 11,930.44, 17,904.30 and 7,981.96

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Solution

The fourth proportional to 11,930.44, 17,904.30 and 7,981.96 is: 11,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,930.44 : 17,904.30 = 7,981.96 : x
  2. Step 2: Convert to fraction form
    11,930.44/17,904.30 = 7,981.96/x
  3. Step 3: Cross multiply
    11,930.44x = 17,904.30 × 7,981.96
  4. Step 4: Simplify right side
    11,930.44x = 142,911,406.43
  5. Step 5: Solve for x
    x = 142,911,406.43/11,930.44
  6. Step 6: Final answer
    x = 11,978.72

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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.