Home / 28,571.22-42,856.37-7,794.72

Finding the Fourth Proportional to 28,571.22, 42,856.37 and 7,794.72

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Solution

The fourth proportional to 28,571.22, 42,856.37 and 7,794.72 is: 11,691.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.22 : 42,856.37 = 7,794.72 : x
  2. Step 2: Convert to fraction form
    28,571.22/42,856.37 = 7,794.72/x
  3. Step 3: Cross multiply
    28,571.22x = 42,856.37 × 7,794.72
  4. Step 4: Simplify right side
    28,571.22x = 334,053,423.85
  5. Step 5: Solve for x
    x = 334,053,423.85/28,571.22
  6. Step 6: Final answer
    x = 11,691.96

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1.5x scale

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.