Home / 18,178.90-25,086.45-11,891.14

Finding the Fourth Proportional to 18,178.90, 25,086.45 and 11,891.14

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Solution

The fourth proportional to 18,178.90, 25,086.45 and 11,891.14 is: 16,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.90 : 25,086.45 = 11,891.14 : x
  2. Step 2: Convert to fraction form
    18,178.90/25,086.45 = 11,891.14/x
  3. Step 3: Cross multiply
    18,178.90x = 25,086.45 × 11,891.14
  4. Step 4: Simplify right side
    18,178.90x = 298,306,489.05
  5. Step 5: Solve for x
    x = 298,306,489.05/18,178.90
  6. Step 6: Final answer
    x = 16,409.49

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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.