Home / 13,626.05-18,803.34-7,961.33

Finding the Fourth Proportional to 13,626.05, 18,803.34 and 7,961.33

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Solution

The fourth proportional to 13,626.05, 18,803.34 and 7,961.33 is: 10,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.05 : 18,803.34 = 7,961.33 : x
  2. Step 2: Convert to fraction form
    13,626.05/18,803.34 = 7,961.33/x
  3. Step 3: Cross multiply
    13,626.05x = 18,803.34 × 7,961.33
  4. Step 4: Simplify right side
    13,626.05x = 149,699,641.85
  5. Step 5: Solve for x
    x = 149,699,641.85/13,626.05
  6. Step 6: Final answer
    x = 10,986.29

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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.