Home / 18,227.12-27,321.72-13,217.36

Finding the Fourth Proportional to 18,227.12, 27,321.72 and 13,217.36

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Solution

The fourth proportional to 18,227.12, 27,321.72 and 13,217.36 is: 19,812.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,227.12 : 27,321.72 = 13,217.36 : x
  2. Step 2: Convert to fraction form
    18,227.12/27,321.72 = 13,217.36/x
  3. Step 3: Cross multiply
    18,227.12x = 27,321.72 × 13,217.36
  4. Step 4: Simplify right side
    18,227.12x = 361,121,009.06
  5. Step 5: Solve for x
    x = 361,121,009.06/18,227.12
  6. Step 6: Final answer
    x = 19,812.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.