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Finding the Fourth Proportional to 18,294.45, 27,448.89 and 7,766.74

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Solution

The fourth proportional to 18,294.45, 27,448.89 and 7,766.74 is: 11,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.45 : 27,448.89 = 7,766.74 : x
  2. Step 2: Convert to fraction form
    18,294.45/27,448.89 = 7,766.74/x
  3. Step 3: Cross multiply
    18,294.45x = 27,448.89 × 7,766.74
  4. Step 4: Simplify right side
    18,294.45x = 213,188,391.92
  5. Step 5: Solve for x
    x = 213,188,391.92/18,294.45
  6. Step 6: Final answer
    x = 11,653.17

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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.