Home / 12,631.26-17,431.32-7,327.68

Finding the Fourth Proportional to 12,631.26, 17,431.32 and 7,327.68

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Solution

The fourth proportional to 12,631.26, 17,431.32 and 7,327.68 is: 10,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.26 : 17,431.32 = 7,327.68 : x
  2. Step 2: Convert to fraction form
    12,631.26/17,431.32 = 7,327.68/x
  3. Step 3: Cross multiply
    12,631.26x = 17,431.32 × 7,327.68
  4. Step 4: Simplify right side
    12,631.26x = 127,731,134.94
  5. Step 5: Solve for x
    x = 127,731,134.94/12,631.26
  6. Step 6: Final answer
    x = 10,112.30

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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.