Home / 20,647.94-30,971.84-5,856.86

Finding the Fourth Proportional to 20,647.94, 30,971.84 and 5,856.86

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Solution

The fourth proportional to 20,647.94, 30,971.84 and 5,856.86 is: 8,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.94 : 30,971.84 = 5,856.86 : x
  2. Step 2: Convert to fraction form
    20,647.94/30,971.84 = 5,856.86/x
  3. Step 3: Cross multiply
    20,647.94x = 30,971.84 × 5,856.86
  4. Step 4: Simplify right side
    20,647.94x = 181,397,730.82
  5. Step 5: Solve for x
    x = 181,397,730.82/20,647.94
  6. Step 6: Final answer
    x = 8,785.27

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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.