Home / 18,739.39-25,857.24-11,188.77

Finding the Fourth Proportional to 18,739.39, 25,857.24 and 11,188.77

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Solution

The fourth proportional to 18,739.39, 25,857.24 and 11,188.77 is: 15,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.39 : 25,857.24 = 11,188.77 : x
  2. Step 2: Convert to fraction form
    18,739.39/25,857.24 = 11,188.77/x
  3. Step 3: Cross multiply
    18,739.39x = 25,857.24 × 11,188.77
  4. Step 4: Simplify right side
    18,739.39x = 289,310,711.19
  5. Step 5: Solve for x
    x = 289,310,711.19/18,739.39
  6. Step 6: Final answer
    x = 15,438.64

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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.