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Finding the Fourth Proportional to 18,157.88, 27,236.11 and 5,009.89

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Solution

The fourth proportional to 18,157.88, 27,236.11 and 5,009.89 is: 7,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,157.88 : 27,236.11 = 5,009.89 : x
  2. Step 2: Convert to fraction form
    18,157.88/27,236.11 = 5,009.89/x
  3. Step 3: Cross multiply
    18,157.88x = 27,236.11 × 5,009.89
  4. Step 4: Simplify right side
    18,157.88x = 136,449,915.13
  5. Step 5: Solve for x
    x = 136,449,915.13/18,157.88
  6. Step 6: Final answer
    x = 7,514.64

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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.