Home / 18,768.83-28,144.94-5,618.75

Finding the Fourth Proportional to 18,768.83, 28,144.94 and 5,618.75

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Solution

The fourth proportional to 18,768.83, 28,144.94 and 5,618.75 is: 8,425.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.83 : 28,144.94 = 5,618.75 : x
  2. Step 2: Convert to fraction form
    18,768.83/28,144.94 = 5,618.75/x
  3. Step 3: Cross multiply
    18,768.83x = 28,144.94 × 5,618.75
  4. Step 4: Simplify right side
    18,768.83x = 158,139,212.81
  5. Step 5: Solve for x
    x = 158,139,212.81/18,768.83
  6. Step 6: Final answer
    x = 8,425.63

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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.