Home / 19,939.20-27,516.41-10,986.61

Finding the Fourth Proportional to 19,939.20, 27,516.41 and 10,986.61

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Solution

The fourth proportional to 19,939.20, 27,516.41 and 10,986.61 is: 15,161.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.20 : 27,516.41 = 10,986.61 : x
  2. Step 2: Convert to fraction form
    19,939.20/27,516.41 = 10,986.61/x
  3. Step 3: Cross multiply
    19,939.20x = 27,516.41 × 10,986.61
  4. Step 4: Simplify right side
    19,939.20x = 302,312,065.27
  5. Step 5: Solve for x
    x = 302,312,065.27/19,939.20
  6. Step 6: Final answer
    x = 15,161.69

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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.