Home / 13,518.82-18,660.81-10,171.09

Finding the Fourth Proportional to 13,518.82, 18,660.81 and 10,171.09

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Solution

The fourth proportional to 13,518.82, 18,660.81 and 10,171.09 is: 14,039.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.82 : 18,660.81 = 10,171.09 : x
  2. Step 2: Convert to fraction form
    13,518.82/18,660.81 = 10,171.09/x
  3. Step 3: Cross multiply
    13,518.82x = 18,660.81 × 10,171.09
  4. Step 4: Simplify right side
    13,518.82x = 189,800,777.98
  5. Step 5: Solve for x
    x = 189,800,777.98/13,518.82
  6. Step 6: Final answer
    x = 14,039.74

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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.