Home / 20,172.30-27,835.62-11,218.37

Finding the Fourth Proportional to 20,172.30, 27,835.62 and 11,218.37

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Solution

The fourth proportional to 20,172.30, 27,835.62 and 11,218.37 is: 15,480.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.30 : 27,835.62 = 11,218.37 : x
  2. Step 2: Convert to fraction form
    20,172.30/27,835.62 = 11,218.37/x
  3. Step 3: Cross multiply
    20,172.30x = 27,835.62 × 11,218.37
  4. Step 4: Simplify right side
    20,172.30x = 312,270,145.16
  5. Step 5: Solve for x
    x = 312,270,145.16/20,172.30
  6. Step 6: Final answer
    x = 15,480.15

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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.