Home / 18,727.40-28,091.21-5,579.89

Finding the Fourth Proportional to 18,727.40, 28,091.21 and 5,579.89

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Solution

The fourth proportional to 18,727.40, 28,091.21 and 5,579.89 is: 8,369.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.40 : 28,091.21 = 5,579.89 : x
  2. Step 2: Convert to fraction form
    18,727.40/28,091.21 = 5,579.89/x
  3. Step 3: Cross multiply
    18,727.40x = 28,091.21 × 5,579.89
  4. Step 4: Simplify right side
    18,727.40x = 156,745,763.64
  5. Step 5: Solve for x
    x = 156,745,763.64/18,727.40
  6. Step 6: Final answer
    x = 8,369.86

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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.