Home / 18,128.22-27,189.24-4,977.51

Finding the Fourth Proportional to 18,128.22, 27,189.24 and 4,977.51

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Solution

The fourth proportional to 18,128.22, 27,189.24 and 4,977.51 is: 7,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.22 : 27,189.24 = 4,977.51 : x
  2. Step 2: Convert to fraction form
    18,128.22/27,189.24 = 4,977.51/x
  3. Step 3: Cross multiply
    18,128.22x = 27,189.24 × 4,977.51
  4. Step 4: Simplify right side
    18,128.22x = 135,334,713.99
  5. Step 5: Solve for x
    x = 135,334,713.99/18,128.22
  6. Step 6: Final answer
    x = 7,465.42

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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.