Home / 20,800.32-31,200.50-5,217.94

Finding the Fourth Proportional to 20,800.32, 31,200.50 and 5,217.94

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Solution

The fourth proportional to 20,800.32, 31,200.50 and 5,217.94 is: 7,826.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.32 : 31,200.50 = 5,217.94 : x
  2. Step 2: Convert to fraction form
    20,800.32/31,200.50 = 5,217.94/x
  3. Step 3: Cross multiply
    20,800.32x = 31,200.50 × 5,217.94
  4. Step 4: Simplify right side
    20,800.32x = 162,802,336.97
  5. Step 5: Solve for x
    x = 162,802,336.97/20,800.32
  6. Step 6: Final answer
    x = 7,826.92

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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.