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Finding the Fourth Proportional to 19,252.80, 28,879.20 and 5,401.80

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Solution

The fourth proportional to 19,252.80, 28,879.20 and 5,401.80 is: 8,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,252.80 : 28,879.20 = 5,401.80 : x
  2. Step 2: Convert to fraction form
    19,252.80/28,879.20 = 5,401.80/x
  3. Step 3: Cross multiply
    19,252.80x = 28,879.20 × 5,401.80
  4. Step 4: Simplify right side
    19,252.80x = 155,999,662.56
  5. Step 5: Solve for x
    x = 155,999,662.56/19,252.80
  6. Step 6: Final answer
    x = 8,102.70

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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.