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Finding the Fourth Proportional to 12,861.91, 17,725.75 and 10,610.11

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Solution

The fourth proportional to 12,861.91, 17,725.75 and 10,610.11 is: 14,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.91 : 17,725.75 = 10,610.11 : x
  2. Step 2: Convert to fraction form
    12,861.91/17,725.75 = 10,610.11/x
  3. Step 3: Cross multiply
    12,861.91x = 17,725.75 × 10,610.11
  4. Step 4: Simplify right side
    12,861.91x = 188,072,212.65
  5. Step 5: Solve for x
    x = 188,072,212.65/12,861.91
  6. Step 6: Final answer
    x = 14,622.42

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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.