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Finding the Fourth Proportional to 14,092.80, 21,132.80 and 5,324.80

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Solution

The fourth proportional to 14,092.80, 21,132.80 and 5,324.80 is: 7,984.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,092.80 : 21,132.80 = 5,324.80 : x
  2. Step 2: Convert to fraction form
    14,092.80/21,132.80 = 5,324.80/x
  3. Step 3: Cross multiply
    14,092.80x = 21,132.80 × 5,324.80
  4. Step 4: Simplify right side
    14,092.80x = 112,527,933.44
  5. Step 5: Solve for x
    x = 112,527,933.44/14,092.80
  6. Step 6: Final answer
    x = 7,984.78

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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.