Home / 18,825.31-25,979.77-11,270.21

Finding the Fourth Proportional to 18,825.31, 25,979.77 and 11,270.21

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Solution

The fourth proportional to 18,825.31, 25,979.77 and 11,270.21 is: 15,553.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.31 : 25,979.77 = 11,270.21 : x
  2. Step 2: Convert to fraction form
    18,825.31/25,979.77 = 11,270.21/x
  3. Step 3: Cross multiply
    18,825.31x = 25,979.77 × 11,270.21
  4. Step 4: Simplify right side
    18,825.31x = 292,797,347.84
  5. Step 5: Solve for x
    x = 292,797,347.84/18,825.31
  6. Step 6: Final answer
    x = 15,553.39

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1.5x scale

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.