Home / 11,779.22-16,255.55-6,999.68

Finding the Fourth Proportional to 11,779.22, 16,255.55 and 6,999.68

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Solution

The fourth proportional to 11,779.22, 16,255.55 and 6,999.68 is: 9,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,779.22 : 16,255.55 = 6,999.68 : x
  2. Step 2: Convert to fraction form
    11,779.22/16,255.55 = 6,999.68/x
  3. Step 3: Cross multiply
    11,779.22x = 16,255.55 × 6,999.68
  4. Step 4: Simplify right side
    11,779.22x = 113,783,706.36
  5. Step 5: Solve for x
    x = 113,783,706.36/11,779.22
  6. Step 6: Final answer
    x = 9,659.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.