Home / 13,200.11-18,215.74-7,231.73

Finding the Fourth Proportional to 13,200.11, 18,215.74 and 7,231.73

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Solution

The fourth proportional to 13,200.11, 18,215.74 and 7,231.73 is: 9,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.11 : 18,215.74 = 7,231.73 : x
  2. Step 2: Convert to fraction form
    13,200.11/18,215.74 = 7,231.73/x
  3. Step 3: Cross multiply
    13,200.11x = 18,215.74 × 7,231.73
  4. Step 4: Simplify right side
    13,200.11x = 131,731,293.18
  5. Step 5: Solve for x
    x = 131,731,293.18/13,200.11
  6. Step 6: Final answer
    x = 9,979.56

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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.