Home / 19,939.91-27,497.88-13,121.73

Finding the Fourth Proportional to 19,939.91, 27,497.88 and 13,121.73

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Solution

The fourth proportional to 19,939.91, 27,497.88 and 13,121.73 is: 18,095.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.91 : 27,497.88 = 13,121.73 : x
  2. Step 2: Convert to fraction form
    19,939.91/27,497.88 = 13,121.73/x
  3. Step 3: Cross multiply
    19,939.91x = 27,497.88 × 13,121.73
  4. Step 4: Simplify right side
    19,939.91x = 360,819,756.93
  5. Step 5: Solve for x
    x = 360,819,756.93/19,939.91
  6. Step 6: Final answer
    x = 18,095.36

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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.