Home / 12,438.26-17,164.68-7,134.92

Finding the Fourth Proportional to 12,438.26, 17,164.68 and 7,134.92

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Solution

The fourth proportional to 12,438.26, 17,164.68 and 7,134.92 is: 9,846.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.26 : 17,164.68 = 7,134.92 : x
  2. Step 2: Convert to fraction form
    12,438.26/17,164.68 = 7,134.92/x
  3. Step 3: Cross multiply
    12,438.26x = 17,164.68 × 7,134.92
  4. Step 4: Simplify right side
    12,438.26x = 122,468,618.63
  5. Step 5: Solve for x
    x = 122,468,618.63/12,438.26
  6. Step 6: Final answer
    x = 9,846.12

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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.