Home / 20,822.46-31,235.57-6,778.84

Finding the Fourth Proportional to 20,822.46, 31,235.57 and 6,778.84

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Solution

The fourth proportional to 20,822.46, 31,235.57 and 6,778.84 is: 10,168.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.46 : 31,235.57 = 6,778.84 : x
  2. Step 2: Convert to fraction form
    20,822.46/31,235.57 = 6,778.84/x
  3. Step 3: Cross multiply
    20,822.46x = 31,235.57 × 6,778.84
  4. Step 4: Simplify right side
    20,822.46x = 211,740,931.34
  5. Step 5: Solve for x
    x = 211,740,931.34/20,822.46
  6. Step 6: Final answer
    x = 10,168.87

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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.