Home / 13,195.20-18,209.39-7,226.88

Finding the Fourth Proportional to 13,195.20, 18,209.39 and 7,226.88

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Solution

The fourth proportional to 13,195.20, 18,209.39 and 7,226.88 is: 9,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.20 : 18,209.39 = 7,226.88 : x
  2. Step 2: Convert to fraction form
    13,195.20/18,209.39 = 7,226.88/x
  3. Step 3: Cross multiply
    13,195.20x = 18,209.39 × 7,226.88
  4. Step 4: Simplify right side
    13,195.20x = 131,597,040.27
  5. Step 5: Solve for x
    x = 131,597,040.27/13,195.20
  6. Step 6: Final answer
    x = 9,973.10

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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.