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Finding the Fourth Proportional to 18,522.65, 27,792.82 and 8,660.50

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Solution

The fourth proportional to 18,522.65, 27,792.82 and 8,660.50 is: 12,994.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,522.65 : 27,792.82 = 8,660.50 : x
  2. Step 2: Convert to fraction form
    18,522.65/27,792.82 = 8,660.50/x
  3. Step 3: Cross multiply
    18,522.65x = 27,792.82 × 8,660.50
  4. Step 4: Simplify right side
    18,522.65x = 240,699,717.61
  5. Step 5: Solve for x
    x = 240,699,717.61/18,522.65
  6. Step 6: Final answer
    x = 12,994.89

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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.