Home / 20,139.94-30,218.46-10,777.54

Finding the Fourth Proportional to 20,139.94, 30,218.46 and 10,777.54

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Solution

The fourth proportional to 20,139.94, 30,218.46 and 10,777.54 is: 16,170.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.94 : 30,218.46 = 10,777.54 : x
  2. Step 2: Convert to fraction form
    20,139.94/30,218.46 = 10,777.54/x
  3. Step 3: Cross multiply
    20,139.94x = 30,218.46 × 10,777.54
  4. Step 4: Simplify right side
    20,139.94x = 325,680,661.39
  5. Step 5: Solve for x
    x = 325,680,661.39/20,139.94
  6. Step 6: Final answer
    x = 16,170.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.