Home / 27,849-38,431.62-15,273.78

Finding the Fourth Proportional to 27,849, 38,431.62 and 15,273.78

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Solution

The fourth proportional to 27,849, 38,431.62 and 15,273.78 is: 21,077.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,849 : 38,431.62 = 15,273.78 : x
  2. Step 2: Convert to fraction form
    27,849/38,431.62 = 15,273.78/x
  3. Step 3: Cross multiply
    27,849x = 38,431.62 × 15,273.78
  4. Step 4: Simplify right side
    27,849x = 586,996,108.92
  5. Step 5: Solve for x
    x = 586,996,108.92/27,849
  6. Step 6: Final answer
    x = 21,077.82

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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.