Home / 11,922.60-17,886.30-4,129.80

Finding the Fourth Proportional to 11,922.60, 17,886.30 and 4,129.80

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Solution

The fourth proportional to 11,922.60, 17,886.30 and 4,129.80 is: 6,195.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.60 : 17,886.30 = 4,129.80 : x
  2. Step 2: Convert to fraction form
    11,922.60/17,886.30 = 4,129.80/x
  3. Step 3: Cross multiply
    11,922.60x = 17,886.30 × 4,129.80
  4. Step 4: Simplify right side
    11,922.60x = 73,866,841.74
  5. Step 5: Solve for x
    x = 73,866,841.74/11,922.60
  6. Step 6: Final answer
    x = 6,195.53

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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.