Home / 20,873.66-31,311.97-8,393.75

Finding the Fourth Proportional to 20,873.66, 31,311.97 and 8,393.75

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Solution

The fourth proportional to 20,873.66, 31,311.97 and 8,393.75 is: 12,591.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.66 : 31,311.97 = 8,393.75 : x
  2. Step 2: Convert to fraction form
    20,873.66/31,311.97 = 8,393.75/x
  3. Step 3: Cross multiply
    20,873.66x = 31,311.97 × 8,393.75
  4. Step 4: Simplify right side
    20,873.66x = 262,824,929.24
  5. Step 5: Solve for x
    x = 262,824,929.24/20,873.66
  6. Step 6: Final answer
    x = 12,591.22

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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.