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Finding the Fourth Proportional to 12,450, 17,181.12 and 6,861.12

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Solution

The fourth proportional to 12,450, 17,181.12 and 6,861.12 is: 9,468.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450 : 17,181.12 = 6,861.12 : x
  2. Step 2: Convert to fraction form
    12,450/17,181.12 = 6,861.12/x
  3. Step 3: Cross multiply
    12,450x = 17,181.12 × 6,861.12
  4. Step 4: Simplify right side
    12,450x = 117,881,726.05
  5. Step 5: Solve for x
    x = 117,881,726.05/12,450
  6. Step 6: Final answer
    x = 9,468.41

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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.