Home / 28,786.20-39,727-16,040.22

Finding the Fourth Proportional to 28,786.20, 39,727 and 16,040.22

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Solution

The fourth proportional to 28,786.20, 39,727 and 16,040.22 is: 22,136.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.20 : 39,727 = 16,040.22 : x
  2. Step 2: Convert to fraction form
    28,786.20/39,727 = 16,040.22/x
  3. Step 3: Cross multiply
    28,786.20x = 39,727 × 16,040.22
  4. Step 4: Simplify right side
    28,786.20x = 637,229,819.94
  5. Step 5: Solve for x
    x = 637,229,819.94/28,786.20
  6. Step 6: Final answer
    x = 22,136.64

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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.