Home / 20,995.88-28,975.94-12,046.28

Finding the Fourth Proportional to 20,995.88, 28,975.94 and 12,046.28

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Solution

The fourth proportional to 20,995.88, 28,975.94 and 12,046.28 is: 16,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.88 : 28,975.94 = 12,046.28 : x
  2. Step 2: Convert to fraction form
    20,995.88/28,975.94 = 12,046.28/x
  3. Step 3: Cross multiply
    20,995.88x = 28,975.94 × 12,046.28
  4. Step 4: Simplify right side
    20,995.88x = 349,052,286.50
  5. Step 5: Solve for x
    x = 349,052,286.50/20,995.88
  6. Step 6: Final answer
    x = 16,624.80

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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.