Home / 15,171.77-20,936.21-11,589.21

Finding the Fourth Proportional to 15,171.77, 20,936.21 and 11,589.21

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Solution

The fourth proportional to 15,171.77, 20,936.21 and 11,589.21 is: 15,992.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.77 : 20,936.21 = 11,589.21 : x
  2. Step 2: Convert to fraction form
    15,171.77/20,936.21 = 11,589.21/x
  3. Step 3: Cross multiply
    15,171.77x = 20,936.21 × 11,589.21
  4. Step 4: Simplify right side
    15,171.77x = 242,634,076.35
  5. Step 5: Solve for x
    x = 242,634,076.35/15,171.77
  6. Step 6: Final answer
    x = 15,992.47

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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.