Home / 18,128.88-27,167.40-10,321.56

Finding the Fourth Proportional to 18,128.88, 27,167.40 and 10,321.56

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Solution

The fourth proportional to 18,128.88, 27,167.40 and 10,321.56 is: 15,467.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.88 : 27,167.40 = 10,321.56 : x
  2. Step 2: Convert to fraction form
    18,128.88/27,167.40 = 10,321.56/x
  3. Step 3: Cross multiply
    18,128.88x = 27,167.40 × 10,321.56
  4. Step 4: Simplify right side
    18,128.88x = 280,409,949.14
  5. Step 5: Solve for x
    x = 280,409,949.14/18,128.88
  6. Step 6: Final answer
    x = 15,467.58

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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.