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Finding the Fourth Proportional to 19,238.54, 28,861.54 and 7,391.44

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Solution

The fourth proportional to 19,238.54, 28,861.54 and 7,391.44 is: 11,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,238.54 : 28,861.54 = 7,391.44 : x
  2. Step 2: Convert to fraction form
    19,238.54/28,861.54 = 7,391.44/x
  3. Step 3: Cross multiply
    19,238.54x = 28,861.54 × 7,391.44
  4. Step 4: Simplify right side
    19,238.54x = 213,328,250.59
  5. Step 5: Solve for x
    x = 213,328,250.59/19,238.54
  6. Step 6: Final answer
    x = 11,088.59

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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.