Home / 18,702.12-25,797.54-11,143.48

Finding the Fourth Proportional to 18,702.12, 25,797.54 and 11,143.48

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Solution

The fourth proportional to 18,702.12, 25,797.54 and 11,143.48 is: 15,371.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702.12 : 25,797.54 = 11,143.48 : x
  2. Step 2: Convert to fraction form
    18,702.12/25,797.54 = 11,143.48/x
  3. Step 3: Cross multiply
    18,702.12x = 25,797.54 × 11,143.48
  4. Step 4: Simplify right side
    18,702.12x = 287,474,371.04
  5. Step 5: Solve for x
    x = 287,474,371.04/18,702.12
  6. Step 6: Final answer
    x = 15,371.22

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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.