Home / 20,855.20-31,289.20-16,474.40

Finding the Fourth Proportional to 20,855.20, 31,289.20 and 16,474.40

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Solution

The fourth proportional to 20,855.20, 31,289.20 and 16,474.40 is: 24,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.20 : 31,289.20 = 16,474.40 : x
  2. Step 2: Convert to fraction form
    20,855.20/31,289.20 = 16,474.40/x
  3. Step 3: Cross multiply
    20,855.20x = 31,289.20 × 16,474.40
  4. Step 4: Simplify right side
    20,855.20x = 515,470,796.48
  5. Step 5: Solve for x
    x = 515,470,796.48/20,855.20
  6. Step 6: Final answer
    x = 24,716.66

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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.