Home / 18,825.15-25,976.78-11,271.28

Finding the Fourth Proportional to 18,825.15, 25,976.78 and 11,271.28

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Solution

The fourth proportional to 18,825.15, 25,976.78 and 11,271.28 is: 15,553.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.15 : 25,976.78 = 11,271.28 : x
  2. Step 2: Convert to fraction form
    18,825.15/25,976.78 = 11,271.28/x
  3. Step 3: Cross multiply
    18,825.15x = 25,976.78 × 11,271.28
  4. Step 4: Simplify right side
    18,825.15x = 292,791,425.79
  5. Step 5: Solve for x
    x = 292,791,425.79/18,825.15
  6. Step 6: Final answer
    x = 15,553.21

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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.