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Finding the Fourth Proportional to 17,187.89, 25,805.78 and 8,873.90

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Solution

The fourth proportional to 17,187.89, 25,805.78 and 8,873.90 is: 13,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,187.89 : 25,805.78 = 8,873.90 : x
  2. Step 2: Convert to fraction form
    17,187.89/25,805.78 = 8,873.90/x
  3. Step 3: Cross multiply
    17,187.89x = 25,805.78 × 8,873.90
  4. Step 4: Simplify right side
    17,187.89x = 228,997,911.14
  5. Step 5: Solve for x
    x = 228,997,911.14/17,187.89
  6. Step 6: Final answer
    x = 13,323.21

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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.