Home / 19,815.62-27,321.62-17,121.96

Finding the Fourth Proportional to 19,815.62, 27,321.62 and 17,121.96

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Solution

The fourth proportional to 19,815.62, 27,321.62 and 17,121.96 is: 23,607.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.62 : 27,321.62 = 17,121.96 : x
  2. Step 2: Convert to fraction form
    19,815.62/27,321.62 = 17,121.96/x
  3. Step 3: Cross multiply
    19,815.62x = 27,321.62 × 17,121.96
  4. Step 4: Simplify right side
    19,815.62x = 467,799,684.78
  5. Step 5: Solve for x
    x = 467,799,684.78/19,815.62
  6. Step 6: Final answer
    x = 23,607.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.