Home / 12,409.26-17,126.91-8,427.66

Finding the Fourth Proportional to 12,409.26, 17,126.91 and 8,427.66

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Solution

The fourth proportional to 12,409.26, 17,126.91 and 8,427.66 is: 11,631.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.26 : 17,126.91 = 8,427.66 : x
  2. Step 2: Convert to fraction form
    12,409.26/17,126.91 = 8,427.66/x
  3. Step 3: Cross multiply
    12,409.26x = 17,126.91 × 8,427.66
  4. Step 4: Simplify right side
    12,409.26x = 144,339,774.33
  5. Step 5: Solve for x
    x = 144,339,774.33/12,409.26
  6. Step 6: Final answer
    x = 11,631.62

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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.