Home / 12,408.72-17,141.45-11,287.68

Finding the Fourth Proportional to 12,408.72, 17,141.45 and 11,287.68

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Solution

The fourth proportional to 12,408.72, 17,141.45 and 11,287.68 is: 15,592.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.72 : 17,141.45 = 11,287.68 : x
  2. Step 2: Convert to fraction form
    12,408.72/17,141.45 = 11,287.68/x
  3. Step 3: Cross multiply
    12,408.72x = 17,141.45 × 11,287.68
  4. Step 4: Simplify right side
    12,408.72x = 193,487,202.34
  5. Step 5: Solve for x
    x = 193,487,202.34/12,408.72
  6. Step 6: Final answer
    x = 15,592.84

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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.