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Finding the Fourth Proportional to 18,454.33, 27,700.98 and 8,603.11

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Solution

The fourth proportional to 18,454.33, 27,700.98 and 8,603.11 is: 12,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.33 : 27,700.98 = 8,603.11 : x
  2. Step 2: Convert to fraction form
    18,454.33/27,700.98 = 8,603.11/x
  3. Step 3: Cross multiply
    18,454.33x = 27,700.98 × 8,603.11
  4. Step 4: Simplify right side
    18,454.33x = 238,314,578.05
  5. Step 5: Solve for x
    x = 238,314,578.05/18,454.33
  6. Step 6: Final answer
    x = 12,913.75

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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.