Home / 13,198.20-18,221.40-10,534.92

Finding the Fourth Proportional to 13,198.20, 18,221.40 and 10,534.92

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Solution

The fourth proportional to 13,198.20, 18,221.40 and 10,534.92 is: 14,544.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.20 : 18,221.40 = 10,534.92 : x
  2. Step 2: Convert to fraction form
    13,198.20/18,221.40 = 10,534.92/x
  3. Step 3: Cross multiply
    13,198.20x = 18,221.40 × 10,534.92
  4. Step 4: Simplify right side
    13,198.20x = 191,960,991.29
  5. Step 5: Solve for x
    x = 191,960,991.29/13,198.20
  6. Step 6: Final answer
    x = 14,544.48

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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.