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Finding the Fourth Proportional to 18,157.62, 27,237.84 and 5,009.88

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Solution

The fourth proportional to 18,157.62, 27,237.84 and 5,009.88 is: 7,515.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,157.62 : 27,237.84 = 5,009.88 : x
  2. Step 2: Convert to fraction form
    18,157.62/27,237.84 = 5,009.88/x
  3. Step 3: Cross multiply
    18,157.62x = 27,237.84 × 5,009.88
  4. Step 4: Simplify right side
    18,157.62x = 136,458,309.86
  5. Step 5: Solve for x
    x = 136,458,309.86/18,157.62
  6. Step 6: Final answer
    x = 7,515.21

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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.