Home / 11,971.12-17,956.66-3,205.80

Finding the Fourth Proportional to 11,971.12, 17,956.66 and 3,205.80

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Solution

The fourth proportional to 11,971.12, 17,956.66 and 3,205.80 is: 4,808.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.12 : 17,956.66 = 3,205.80 : x
  2. Step 2: Convert to fraction form
    11,971.12/17,956.66 = 3,205.80/x
  3. Step 3: Cross multiply
    11,971.12x = 17,956.66 × 3,205.80
  4. Step 4: Simplify right side
    11,971.12x = 57,565,460.63
  5. Step 5: Solve for x
    x = 57,565,460.63/11,971.12
  6. Step 6: Final answer
    x = 4,808.69

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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.