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Finding the Fourth Proportional to 18,690.97, 28,029.46 and 7,593.92

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Solution

The fourth proportional to 18,690.97, 28,029.46 and 7,593.92 is: 11,388.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.97 : 28,029.46 = 7,593.92 : x
  2. Step 2: Convert to fraction form
    18,690.97/28,029.46 = 7,593.92/x
  3. Step 3: Cross multiply
    18,690.97x = 28,029.46 × 7,593.92
  4. Step 4: Simplify right side
    18,690.97x = 212,853,336.74
  5. Step 5: Solve for x
    x = 212,853,336.74/18,690.97
  6. Step 6: Final answer
    x = 11,388.03

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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.