Home / 11,757.12-16,224.32-6,720.96

Finding the Fourth Proportional to 11,757.12, 16,224.32 and 6,720.96

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Solution

The fourth proportional to 11,757.12, 16,224.32 and 6,720.96 is: 9,274.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,757.12 : 16,224.32 = 6,720.96 : x
  2. Step 2: Convert to fraction form
    11,757.12/16,224.32 = 6,720.96/x
  3. Step 3: Cross multiply
    11,757.12x = 16,224.32 × 6,720.96
  4. Step 4: Simplify right side
    11,757.12x = 109,043,005.75
  5. Step 5: Solve for x
    x = 109,043,005.75/11,757.12
  6. Step 6: Final answer
    x = 9,274.64

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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.