Home / 18,139.11-27,209.37-4,992.51

Finding the Fourth Proportional to 18,139.11, 27,209.37 and 4,992.51

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Solution

The fourth proportional to 18,139.11, 27,209.37 and 4,992.51 is: 7,488.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.11 : 27,209.37 = 4,992.51 : x
  2. Step 2: Convert to fraction form
    18,139.11/27,209.37 = 4,992.51/x
  3. Step 3: Cross multiply
    18,139.11x = 27,209.37 × 4,992.51
  4. Step 4: Simplify right side
    18,139.11x = 135,843,051.82
  5. Step 5: Solve for x
    x = 135,843,051.82/18,139.11
  6. Step 6: Final answer
    x = 7,488.96

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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.