Home / 12,172.96-18,259.92-3,408.64

Finding the Fourth Proportional to 12,172.96, 18,259.92 and 3,408.64

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Solution

The fourth proportional to 12,172.96, 18,259.92 and 3,408.64 is: 5,113.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.96 : 18,259.92 = 3,408.64 : x
  2. Step 2: Convert to fraction form
    12,172.96/18,259.92 = 3,408.64/x
  3. Step 3: Cross multiply
    12,172.96x = 18,259.92 × 3,408.64
  4. Step 4: Simplify right side
    12,172.96x = 62,241,493.71
  5. Step 5: Solve for x
    x = 62,241,493.71/12,172.96
  6. Step 6: Final answer
    x = 5,113.09

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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.