Home / 20,824.64-31,179.20-16,216.64

Finding the Fourth Proportional to 20,824.64, 31,179.20 and 16,216.64

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Solution

The fourth proportional to 20,824.64, 31,179.20 and 16,216.64 is: 24,279.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.64 : 31,179.20 = 16,216.64 : x
  2. Step 2: Convert to fraction form
    20,824.64/31,179.20 = 16,216.64/x
  3. Step 3: Cross multiply
    20,824.64x = 31,179.20 × 16,216.64
  4. Step 4: Simplify right side
    20,824.64x = 505,621,861.89
  5. Step 5: Solve for x
    x = 505,621,861.89/20,824.64
  6. Step 6: Final answer
    x = 24,279.98

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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.