Home / 20,163.40-27,819.66-13,784.65

Finding the Fourth Proportional to 20,163.40, 27,819.66 and 13,784.65

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Solution

The fourth proportional to 20,163.40, 27,819.66 and 13,784.65 is: 19,018.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.40 : 27,819.66 = 13,784.65 : x
  2. Step 2: Convert to fraction form
    20,163.40/27,819.66 = 13,784.65/x
  3. Step 3: Cross multiply
    20,163.40x = 27,819.66 × 13,784.65
  4. Step 4: Simplify right side
    20,163.40x = 383,484,276.22
  5. Step 5: Solve for x
    x = 383,484,276.22/20,163.40
  6. Step 6: Final answer
    x = 19,018.83

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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.