Home / 18,960.82-26,165.90-11,003.78

Finding the Fourth Proportional to 18,960.82, 26,165.90 and 11,003.78

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Solution

The fourth proportional to 18,960.82, 26,165.90 and 11,003.78 is: 15,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.82 : 26,165.90 = 11,003.78 : x
  2. Step 2: Convert to fraction form
    18,960.82/26,165.90 = 11,003.78/x
  3. Step 3: Cross multiply
    18,960.82x = 26,165.90 × 11,003.78
  4. Step 4: Simplify right side
    18,960.82x = 287,923,900.03
  5. Step 5: Solve for x
    x = 287,923,900.03/18,960.82
  6. Step 6: Final answer
    x = 15,185.20

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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.