Home / 20,172.20-27,837.24-11,219.51

Finding the Fourth Proportional to 20,172.20, 27,837.24 and 11,219.51

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Solution

The fourth proportional to 20,172.20, 27,837.24 and 11,219.51 is: 15,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.20 : 27,837.24 = 11,219.51 : x
  2. Step 2: Convert to fraction form
    20,172.20/27,837.24 = 11,219.51/x
  3. Step 3: Cross multiply
    20,172.20x = 27,837.24 × 11,219.51
  4. Step 4: Simplify right side
    20,172.20x = 312,320,262.15
  5. Step 5: Solve for x
    x = 312,320,262.15/20,172.20
  6. Step 6: Final answer
    x = 15,482.71

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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.