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Finding the Fourth Proportional to 18,171.23, 27,265.44 and 7,643.55

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Solution

The fourth proportional to 18,171.23, 27,265.44 and 7,643.55 is: 11,468.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171.23 : 27,265.44 = 7,643.55 : x
  2. Step 2: Convert to fraction form
    18,171.23/27,265.44 = 7,643.55/x
  3. Step 3: Cross multiply
    18,171.23x = 27,265.44 × 7,643.55
  4. Step 4: Simplify right side
    18,171.23x = 208,404,753.91
  5. Step 5: Solve for x
    x = 208,404,753.91/18,171.23
  6. Step 6: Final answer
    x = 11,468.94

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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.