Home / 13,221.11-18,245.31-7,252.38

Finding the Fourth Proportional to 13,221.11, 18,245.31 and 7,252.38

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Solution

The fourth proportional to 13,221.11, 18,245.31 and 7,252.38 is: 10,008.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.11 : 18,245.31 = 7,252.38 : x
  2. Step 2: Convert to fraction form
    13,221.11/18,245.31 = 7,252.38/x
  3. Step 3: Cross multiply
    13,221.11x = 18,245.31 × 7,252.38
  4. Step 4: Simplify right side
    13,221.11x = 132,321,921.34
  5. Step 5: Solve for x
    x = 132,321,921.34/13,221.11
  6. Step 6: Final answer
    x = 10,008.38

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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.