Home / 18,845.40-28,284.30-8,331.60

Finding the Fourth Proportional to 18,845.40, 28,284.30 and 8,331.60

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Solution

The fourth proportional to 18,845.40, 28,284.30 and 8,331.60 is: 12,504.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845.40 : 28,284.30 = 8,331.60 : x
  2. Step 2: Convert to fraction form
    18,845.40/28,284.30 = 8,331.60/x
  3. Step 3: Cross multiply
    18,845.40x = 28,284.30 × 8,331.60
  4. Step 4: Simplify right side
    18,845.40x = 235,653,473.88
  5. Step 5: Solve for x
    x = 235,653,473.88/18,845.40
  6. Step 6: Final answer
    x = 12,504.56

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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.