Home / 18,691.90-25,794.86-11,977.57

Finding the Fourth Proportional to 18,691.90, 25,794.86 and 11,977.57

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Solution

The fourth proportional to 18,691.90, 25,794.86 and 11,977.57 is: 16,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.90 : 25,794.86 = 11,977.57 : x
  2. Step 2: Convert to fraction form
    18,691.90/25,794.86 = 11,977.57/x
  3. Step 3: Cross multiply
    18,691.90x = 25,794.86 × 11,977.57
  4. Step 4: Simplify right side
    18,691.90x = 308,959,713.65
  5. Step 5: Solve for x
    x = 308,959,713.65/18,691.90
  6. Step 6: Final answer
    x = 16,529.07

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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.