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Finding the Fourth Proportional to 18,105.98, 27,157.80 and 6,259.42

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Solution

The fourth proportional to 18,105.98, 27,157.80 and 6,259.42 is: 9,388.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.98 : 27,157.80 = 6,259.42 : x
  2. Step 2: Convert to fraction form
    18,105.98/27,157.80 = 6,259.42/x
  3. Step 3: Cross multiply
    18,105.98x = 27,157.80 × 6,259.42
  4. Step 4: Simplify right side
    18,105.98x = 169,992,186.14
  5. Step 5: Solve for x
    x = 169,992,186.14/18,105.98
  6. Step 6: Final answer
    x = 9,388.73

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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.