Home / 11,986.24-16,505.34-11,720.72

Finding the Fourth Proportional to 11,986.24, 16,505.34 and 11,720.72

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Solution

The fourth proportional to 11,986.24, 16,505.34 and 11,720.72 is: 16,139.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.24 : 16,505.34 = 11,720.72 : x
  2. Step 2: Convert to fraction form
    11,986.24/16,505.34 = 11,720.72/x
  3. Step 3: Cross multiply
    11,986.24x = 16,505.34 × 11,720.72
  4. Step 4: Simplify right side
    11,986.24x = 193,454,468.64
  5. Step 5: Solve for x
    x = 193,454,468.64/11,986.24
  6. Step 6: Final answer
    x = 16,139.71

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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.