Home / 13,198.99-18,214.62-7,231.04

Finding the Fourth Proportional to 13,198.99, 18,214.62 and 7,231.04

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Solution

The fourth proportional to 13,198.99, 18,214.62 and 7,231.04 is: 9,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.99 : 18,214.62 = 7,231.04 : x
  2. Step 2: Convert to fraction form
    13,198.99/18,214.62 = 7,231.04/x
  3. Step 3: Cross multiply
    13,198.99x = 18,214.62 × 7,231.04
  4. Step 4: Simplify right side
    13,198.99x = 131,710,645.80
  5. Step 5: Solve for x
    x = 131,710,645.80/13,198.99
  6. Step 6: Final answer
    x = 9,978.84

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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.