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Finding the Fourth Proportional to 18,603.88, 27,856.04 and 15,651.43

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Solution

The fourth proportional to 18,603.88, 27,856.04 and 15,651.43 is: 23,435.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.88 : 27,856.04 = 15,651.43 : x
  2. Step 2: Convert to fraction form
    18,603.88/27,856.04 = 15,651.43/x
  3. Step 3: Cross multiply
    18,603.88x = 27,856.04 × 15,651.43
  4. Step 4: Simplify right side
    18,603.88x = 435,986,712.24
  5. Step 5: Solve for x
    x = 435,986,712.24/18,603.88
  6. Step 6: Final answer
    x = 23,435.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.