Home / 13,388.82-18,480.22-8,350.06

Finding the Fourth Proportional to 13,388.82, 18,480.22 and 8,350.06

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Solution

The fourth proportional to 13,388.82, 18,480.22 and 8,350.06 is: 11,525.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.82 : 18,480.22 = 8,350.06 : x
  2. Step 2: Convert to fraction form
    13,388.82/18,480.22 = 8,350.06/x
  3. Step 3: Cross multiply
    13,388.82x = 18,480.22 × 8,350.06
  4. Step 4: Simplify right side
    13,388.82x = 154,310,945.81
  5. Step 5: Solve for x
    x = 154,310,945.81/13,388.82
  6. Step 6: Final answer
    x = 11,525.36

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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.