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Finding the Fourth Proportional to 13,603.96, 18,755.42 and 8,880.04

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Solution

The fourth proportional to 13,603.96, 18,755.42 and 8,880.04 is: 12,242.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.96 : 18,755.42 = 8,880.04 : x
  2. Step 2: Convert to fraction form
    13,603.96/18,755.42 = 8,880.04/x
  3. Step 3: Cross multiply
    13,603.96x = 18,755.42 × 8,880.04
  4. Step 4: Simplify right side
    13,603.96x = 166,548,879.82
  5. Step 5: Solve for x
    x = 166,548,879.82/13,603.96
  6. Step 6: Final answer
    x = 12,242.68

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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.