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Finding the Fourth Proportional to 18,293.45, 27,447.39 and 7,765.74

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Solution

The fourth proportional to 18,293.45, 27,447.39 and 7,765.74 is: 11,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.45 : 27,447.39 = 7,765.74 : x
  2. Step 2: Convert to fraction form
    18,293.45/27,447.39 = 7,765.74/x
  3. Step 3: Cross multiply
    18,293.45x = 27,447.39 × 7,765.74
  4. Step 4: Simplify right side
    18,293.45x = 213,149,294.42
  5. Step 5: Solve for x
    x = 213,149,294.42/18,293.45
  6. Step 6: Final answer
    x = 11,651.68

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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.