Home / 18,816.03-25,965.09-10,857.78

Finding the Fourth Proportional to 18,816.03, 25,965.09 and 10,857.78

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Solution

The fourth proportional to 18,816.03, 25,965.09 and 10,857.78 is: 14,983.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.03 : 25,965.09 = 10,857.78 : x
  2. Step 2: Convert to fraction form
    18,816.03/25,965.09 = 10,857.78/x
  3. Step 3: Cross multiply
    18,816.03x = 25,965.09 × 10,857.78
  4. Step 4: Simplify right side
    18,816.03x = 281,923,234.90
  5. Step 5: Solve for x
    x = 281,923,234.90/18,816.03
  6. Step 6: Final answer
    x = 14,983.14

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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.