Home / 18,119.73-27,178.38-4,971

Finding the Fourth Proportional to 18,119.73, 27,178.38 and 4,971

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Solution

The fourth proportional to 18,119.73, 27,178.38 and 4,971 is: 7,456.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.73 : 27,178.38 = 4,971 : x
  2. Step 2: Convert to fraction form
    18,119.73/27,178.38 = 4,971/x
  3. Step 3: Cross multiply
    18,119.73x = 27,178.38 × 4,971
  4. Step 4: Simplify right side
    18,119.73x = 135,103,726.98
  5. Step 5: Solve for x
    x = 135,103,726.98/18,119.73
  6. Step 6: Final answer
    x = 7,456.17

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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.