Home / 20,816.03-31,216.21-6,772.39

Finding the Fourth Proportional to 20,816.03, 31,216.21 and 6,772.39

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Solution

The fourth proportional to 20,816.03, 31,216.21 and 6,772.39 is: 10,156.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.03 : 31,216.21 = 6,772.39 : x
  2. Step 2: Convert to fraction form
    20,816.03/31,216.21 = 6,772.39/x
  3. Step 3: Cross multiply
    20,816.03x = 31,216.21 × 6,772.39
  4. Step 4: Simplify right side
    20,816.03x = 211,408,348.44
  5. Step 5: Solve for x
    x = 211,408,348.44/20,816.03
  6. Step 6: Final answer
    x = 10,156.04

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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.