Home / 12,438.96-17,166.96-7,134.72

Finding the Fourth Proportional to 12,438.96, 17,166.96 and 7,134.72

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Solution

The fourth proportional to 12,438.96, 17,166.96 and 7,134.72 is: 9,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.96 : 17,166.96 = 7,134.72 : x
  2. Step 2: Convert to fraction form
    12,438.96/17,166.96 = 7,134.72/x
  3. Step 3: Cross multiply
    12,438.96x = 17,166.96 × 7,134.72
  4. Step 4: Simplify right side
    12,438.96x = 122,481,452.85
  5. Step 5: Solve for x
    x = 122,481,452.85/12,438.96
  6. Step 6: Final answer
    x = 9,846.60

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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.