Home / 13,338.54-18,408.06-8,855.28

Finding the Fourth Proportional to 13,338.54, 18,408.06 and 8,855.28

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Solution

The fourth proportional to 13,338.54, 18,408.06 and 8,855.28 is: 12,220.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.54 : 18,408.06 = 8,855.28 : x
  2. Step 2: Convert to fraction form
    13,338.54/18,408.06 = 8,855.28/x
  3. Step 3: Cross multiply
    13,338.54x = 18,408.06 × 8,855.28
  4. Step 4: Simplify right side
    13,338.54x = 163,008,525.56
  5. Step 5: Solve for x
    x = 163,008,525.56/13,338.54
  6. Step 6: Final answer
    x = 12,220.87

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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.