Home / 13,195.70-18,209.38-7,226.22

Finding the Fourth Proportional to 13,195.70, 18,209.38 and 7,226.22

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Solution

The fourth proportional to 13,195.70, 18,209.38 and 7,226.22 is: 9,971.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.70 : 18,209.38 = 7,226.22 : x
  2. Step 2: Convert to fraction form
    13,195.70/18,209.38 = 7,226.22/x
  3. Step 3: Cross multiply
    13,195.70x = 18,209.38 × 7,226.22
  4. Step 4: Simplify right side
    13,195.70x = 131,584,985.94
  5. Step 5: Solve for x
    x = 131,584,985.94/13,195.70
  6. Step 6: Final answer
    x = 9,971.81

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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.