Home / 20,728.73-31,069.98-8,245.41

Finding the Fourth Proportional to 20,728.73, 31,069.98 and 8,245.41

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Solution

The fourth proportional to 20,728.73, 31,069.98 and 8,245.41 is: 12,358.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.73 : 31,069.98 = 8,245.41 : x
  2. Step 2: Convert to fraction form
    20,728.73/31,069.98 = 8,245.41/x
  3. Step 3: Cross multiply
    20,728.73x = 31,069.98 × 8,245.41
  4. Step 4: Simplify right side
    20,728.73x = 256,184,723.79
  5. Step 5: Solve for x
    x = 256,184,723.79/20,728.73
  6. Step 6: Final answer
    x = 12,358.92

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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.