Home / 12,438.62-17,147.16-9,449.26

Finding the Fourth Proportional to 12,438.62, 17,147.16 and 9,449.26

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Solution

The fourth proportional to 12,438.62, 17,147.16 and 9,449.26 is: 13,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.62 : 17,147.16 = 9,449.26 : x
  2. Step 2: Convert to fraction form
    12,438.62/17,147.16 = 9,449.26/x
  3. Step 3: Cross multiply
    12,438.62x = 17,147.16 × 9,449.26
  4. Step 4: Simplify right side
    12,438.62x = 162,028,026.69
  5. Step 5: Solve for x
    x = 162,028,026.69/12,438.62
  6. Step 6: Final answer
    x = 13,026.21

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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.