Home / 13,321.20-18,371.97-8,015.03

Finding the Fourth Proportional to 13,321.20, 18,371.97 and 8,015.03

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Solution

The fourth proportional to 13,321.20, 18,371.97 and 8,015.03 is: 11,053.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.20 : 18,371.97 = 8,015.03 : x
  2. Step 2: Convert to fraction form
    13,321.20/18,371.97 = 8,015.03/x
  3. Step 3: Cross multiply
    13,321.20x = 18,371.97 × 8,015.03
  4. Step 4: Simplify right side
    13,321.20x = 147,251,798.85
  5. Step 5: Solve for x
    x = 147,251,798.85/13,321.20
  6. Step 6: Final answer
    x = 11,053.94

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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.