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Finding the Fourth Proportional to 18,759.92, 28,098.22 and 13,479.07

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Solution

The fourth proportional to 18,759.92, 28,098.22 and 13,479.07 is: 20,188.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.92 : 28,098.22 = 13,479.07 : x
  2. Step 2: Convert to fraction form
    18,759.92/28,098.22 = 13,479.07/x
  3. Step 3: Cross multiply
    18,759.92x = 28,098.22 × 13,479.07
  4. Step 4: Simplify right side
    18,759.92x = 378,737,874.26
  5. Step 5: Solve for x
    x = 378,737,874.26/18,759.92
  6. Step 6: Final answer
    x = 20,188.67

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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.