Home / 28,786.80-39,724.44-19,353.84

Finding the Fourth Proportional to 28,786.80, 39,724.44 and 19,353.84

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Solution

The fourth proportional to 28,786.80, 39,724.44 and 19,353.84 is: 26,707.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.80 : 39,724.44 = 19,353.84 : x
  2. Step 2: Convert to fraction form
    28,786.80/39,724.44 = 19,353.84/x
  3. Step 3: Cross multiply
    28,786.80x = 39,724.44 × 19,353.84
  4. Step 4: Simplify right side
    28,786.80x = 768,820,455.85
  5. Step 5: Solve for x
    x = 768,820,455.85/28,786.80
  6. Step 6: Final answer
    x = 26,707.40

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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.