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Finding the Fourth Proportional to 18,993.88, 28,490.82 and 8,593.48

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Solution

The fourth proportional to 18,993.88, 28,490.82 and 8,593.48 is: 12,890.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.88 : 28,490.82 = 8,593.48 : x
  2. Step 2: Convert to fraction form
    18,993.88/28,490.82 = 8,593.48/x
  3. Step 3: Cross multiply
    18,993.88x = 28,490.82 × 8,593.48
  4. Step 4: Simplify right side
    18,993.88x = 244,835,291.85
  5. Step 5: Solve for x
    x = 244,835,291.85/18,993.88
  6. Step 6: Final answer
    x = 12,890.22

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Similar ratio
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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.