Home / 18,813.09-28,219.60-5,665.44

Finding the Fourth Proportional to 18,813.09, 28,219.60 and 5,665.44

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Solution

The fourth proportional to 18,813.09, 28,219.60 and 5,665.44 is: 8,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.09 : 28,219.60 = 5,665.44 : x
  2. Step 2: Convert to fraction form
    18,813.09/28,219.60 = 5,665.44/x
  3. Step 3: Cross multiply
    18,813.09x = 28,219.60 × 5,665.44
  4. Step 4: Simplify right side
    18,813.09x = 159,876,450.62
  5. Step 5: Solve for x
    x = 159,876,450.62/18,813.09
  6. Step 6: Final answer
    x = 8,498.15

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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.