Home / 18,620.10-27,921.37-6,765.51

Finding the Fourth Proportional to 18,620.10, 27,921.37 and 6,765.51

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Solution

The fourth proportional to 18,620.10, 27,921.37 and 6,765.51 is: 10,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.10 : 27,921.37 = 6,765.51 : x
  2. Step 2: Convert to fraction form
    18,620.10/27,921.37 = 6,765.51/x
  3. Step 3: Cross multiply
    18,620.10x = 27,921.37 × 6,765.51
  4. Step 4: Simplify right side
    18,620.10x = 188,902,274.12
  5. Step 5: Solve for x
    x = 188,902,274.12/18,620.10
  6. Step 6: Final answer
    x = 10,145.08

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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.