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Finding the Fourth Proportional to 18,369.80, 27,532.82 and 12,792.95

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Solution

The fourth proportional to 18,369.80, 27,532.82 and 12,792.95 is: 19,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.80 : 27,532.82 = 12,792.95 : x
  2. Step 2: Convert to fraction form
    18,369.80/27,532.82 = 12,792.95/x
  3. Step 3: Cross multiply
    18,369.80x = 27,532.82 × 12,792.95
  4. Step 4: Simplify right side
    18,369.80x = 352,225,987.19
  5. Step 5: Solve for x
    x = 352,225,987.19/18,369.80
  6. Step 6: Final answer
    x = 19,174.19

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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.