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Finding the Fourth Proportional to 18,493.59, 27,745.05 and 5,345.88

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Solution

The fourth proportional to 18,493.59, 27,745.05 and 5,345.88 is: 8,020.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.59 : 27,745.05 = 5,345.88 : x
  2. Step 2: Convert to fraction form
    18,493.59/27,745.05 = 5,345.88/x
  3. Step 3: Cross multiply
    18,493.59x = 27,745.05 × 5,345.88
  4. Step 4: Simplify right side
    18,493.59x = 148,321,707.89
  5. Step 5: Solve for x
    x = 148,321,707.89/18,493.59
  6. Step 6: Final answer
    x = 8,020.17

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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.