Home / 20,622.32-30,935.10-8,141.48

Finding the Fourth Proportional to 20,622.32, 30,935.10 and 8,141.48

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Solution

The fourth proportional to 20,622.32, 30,935.10 and 8,141.48 is: 12,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.32 : 30,935.10 = 8,141.48 : x
  2. Step 2: Convert to fraction form
    20,622.32/30,935.10 = 8,141.48/x
  3. Step 3: Cross multiply
    20,622.32x = 30,935.10 × 8,141.48
  4. Step 4: Simplify right side
    20,622.32x = 251,857,497.95
  5. Step 5: Solve for x
    x = 251,857,497.95/20,622.32
  6. Step 6: Final answer
    x = 12,212.86

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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.