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Finding the Fourth Proportional to 17,661, 26,489.55 and 5,181.12

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Solution

The fourth proportional to 17,661, 26,489.55 and 5,181.12 is: 7,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,661 : 26,489.55 = 5,181.12 : x
  2. Step 2: Convert to fraction form
    17,661/26,489.55 = 5,181.12/x
  3. Step 3: Cross multiply
    17,661x = 26,489.55 × 5,181.12
  4. Step 4: Simplify right side
    17,661x = 137,245,537.30
  5. Step 5: Solve for x
    x = 137,245,537.30/17,661
  6. Step 6: Final answer
    x = 7,771.11

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Double scale
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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.