Home / 11,755.45-16,222.86-6,720.49

Finding the Fourth Proportional to 11,755.45, 16,222.86 and 6,720.49

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Solution

The fourth proportional to 11,755.45, 16,222.86 and 6,720.49 is: 9,274.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,755.45 : 16,222.86 = 6,720.49 : x
  2. Step 2: Convert to fraction form
    11,755.45/16,222.86 = 6,720.49/x
  3. Step 3: Cross multiply
    11,755.45x = 16,222.86 × 6,720.49
  4. Step 4: Simplify right side
    11,755.45x = 109,025,568.40
  5. Step 5: Solve for x
    x = 109,025,568.40/11,755.45
  6. Step 6: Final answer
    x = 9,274.47

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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.