Home / 19,176.40-28,764.60-18,811.90

Finding the Fourth Proportional to 19,176.40, 28,764.60 and 18,811.90

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Solution

The fourth proportional to 19,176.40, 28,764.60 and 18,811.90 is: 28,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.40 : 28,764.60 = 18,811.90 : x
  2. Step 2: Convert to fraction form
    19,176.40/28,764.60 = 18,811.90/x
  3. Step 3: Cross multiply
    19,176.40x = 28,764.60 × 18,811.90
  4. Step 4: Simplify right side
    19,176.40x = 541,116,778.74
  5. Step 5: Solve for x
    x = 541,116,778.74/19,176.40
  6. Step 6: Final answer
    x = 28,217.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.