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Finding the Fourth Proportional to 18,815, 28,222.68 and 5,667.08

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Solution

The fourth proportional to 18,815, 28,222.68 and 5,667.08 is: 8,500.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815 : 28,222.68 = 5,667.08 : x
  2. Step 2: Convert to fraction form
    18,815/28,222.68 = 5,667.08/x
  3. Step 3: Cross multiply
    18,815x = 28,222.68 × 5,667.08
  4. Step 4: Simplify right side
    18,815x = 159,940,185.37
  5. Step 5: Solve for x
    x = 159,940,185.37/18,815
  6. Step 6: Final answer
    x = 8,500.67

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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.