Home / 13,939.21-20,908.08-10,194.85

Finding the Fourth Proportional to 13,939.21, 20,908.08 and 10,194.85

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Solution

The fourth proportional to 13,939.21, 20,908.08 and 10,194.85 is: 15,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.21 : 20,908.08 = 10,194.85 : x
  2. Step 2: Convert to fraction form
    13,939.21/20,908.08 = 10,194.85/x
  3. Step 3: Cross multiply
    13,939.21x = 20,908.08 × 10,194.85
  4. Step 4: Simplify right side
    13,939.21x = 213,154,739.39
  5. Step 5: Solve for x
    x = 213,154,739.39/13,939.21
  6. Step 6: Final answer
    x = 15,291.74

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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.