Home / 18,912.96-28,369.44-5,765.04

Finding the Fourth Proportional to 18,912.96, 28,369.44 and 5,765.04

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Solution

The fourth proportional to 18,912.96, 28,369.44 and 5,765.04 is: 8,647.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.96 : 28,369.44 = 5,765.04 : x
  2. Step 2: Convert to fraction form
    18,912.96/28,369.44 = 5,765.04/x
  3. Step 3: Cross multiply
    18,912.96x = 28,369.44 × 5,765.04
  4. Step 4: Simplify right side
    18,912.96x = 163,550,956.38
  5. Step 5: Solve for x
    x = 163,550,956.38/18,912.96
  6. Step 6: Final answer
    x = 8,647.56

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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.