Home / 27,825.28-38,398.30-19,881

Finding the Fourth Proportional to 27,825.28, 38,398.30 and 19,881

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Solution

The fourth proportional to 27,825.28, 38,398.30 and 19,881 is: 27,435.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,825.28 : 38,398.30 = 19,881 : x
  2. Step 2: Convert to fraction form
    27,825.28/38,398.30 = 19,881/x
  3. Step 3: Cross multiply
    27,825.28x = 38,398.30 × 19,881
  4. Step 4: Simplify right side
    27,825.28x = 763,396,602.30
  5. Step 5: Solve for x
    x = 763,396,602.30/27,825.28
  6. Step 6: Final answer
    x = 27,435.36

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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.