Home / 20,736.30-31,104.45-6,885.30

Finding the Fourth Proportional to 20,736.30, 31,104.45 and 6,885.30

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Solution

The fourth proportional to 20,736.30, 31,104.45 and 6,885.30 is: 10,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.30 : 31,104.45 = 6,885.30 : x
  2. Step 2: Convert to fraction form
    20,736.30/31,104.45 = 6,885.30/x
  3. Step 3: Cross multiply
    20,736.30x = 31,104.45 × 6,885.30
  4. Step 4: Simplify right side
    20,736.30x = 214,163,469.59
  5. Step 5: Solve for x
    x = 214,163,469.59/20,736.30
  6. Step 6: Final answer
    x = 10,327.95

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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.