Home / 18,885.68-28,329.60-7,213.04

Finding the Fourth Proportional to 18,885.68, 28,329.60 and 7,213.04

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Solution

The fourth proportional to 18,885.68, 28,329.60 and 7,213.04 is: 10,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.68 : 28,329.60 = 7,213.04 : x
  2. Step 2: Convert to fraction form
    18,885.68/28,329.60 = 7,213.04/x
  3. Step 3: Cross multiply
    18,885.68x = 28,329.60 × 7,213.04
  4. Step 4: Simplify right side
    18,885.68x = 204,342,537.98
  5. Step 5: Solve for x
    x = 204,342,537.98/18,885.68
  6. Step 6: Final answer
    x = 10,819.97

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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.