Home / 18,817.87-28,221.53-5,668.33

Finding the Fourth Proportional to 18,817.87, 28,221.53 and 5,668.33

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Solution

The fourth proportional to 18,817.87, 28,221.53 and 5,668.33 is: 8,500.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.87 : 28,221.53 = 5,668.33 : x
  2. Step 2: Convert to fraction form
    18,817.87/28,221.53 = 5,668.33/x
  3. Step 3: Cross multiply
    18,817.87x = 28,221.53 × 5,668.33
  4. Step 4: Simplify right side
    18,817.87x = 159,968,945.14
  5. Step 5: Solve for x
    x = 159,968,945.14/18,817.87
  6. Step 6: Final answer
    x = 8,500.91

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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.