Home / 20,975.59-28,945.44-12,016.87

Finding the Fourth Proportional to 20,975.59, 28,945.44 and 12,016.87

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Solution

The fourth proportional to 20,975.59, 28,945.44 and 12,016.87 is: 16,582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.59 : 28,945.44 = 12,016.87 : x
  2. Step 2: Convert to fraction form
    20,975.59/28,945.44 = 12,016.87/x
  3. Step 3: Cross multiply
    20,975.59x = 28,945.44 × 12,016.87
  4. Step 4: Simplify right side
    20,975.59x = 347,833,589.57
  5. Step 5: Solve for x
    x = 347,833,589.57/20,975.59
  6. Step 6: Final answer
    x = 16,582.78

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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.