Home / 12,173.76-18,258.84-3,408.12

Finding the Fourth Proportional to 12,173.76, 18,258.84 and 3,408.12

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Solution

The fourth proportional to 12,173.76, 18,258.84 and 3,408.12 is: 5,111.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,173.76 : 18,258.84 = 3,408.12 : x
  2. Step 2: Convert to fraction form
    12,173.76/18,258.84 = 3,408.12/x
  3. Step 3: Cross multiply
    12,173.76x = 18,258.84 × 3,408.12
  4. Step 4: Simplify right side
    12,173.76x = 62,228,317.78
  5. Step 5: Solve for x
    x = 62,228,317.78/12,173.76
  6. Step 6: Final answer
    x = 5,111.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.