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Finding the Fourth Proportional to 17,182.90, 25,784.07 and 7,321.15

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Solution

The fourth proportional to 17,182.90, 25,784.07 and 7,321.15 is: 10,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,182.90 : 25,784.07 = 7,321.15 : x
  2. Step 2: Convert to fraction form
    17,182.90/25,784.07 = 7,321.15/x
  3. Step 3: Cross multiply
    17,182.90x = 25,784.07 × 7,321.15
  4. Step 4: Simplify right side
    17,182.90x = 188,769,044.08
  5. Step 5: Solve for x
    x = 188,769,044.08/17,182.90
  6. Step 6: Final answer
    x = 10,985.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.