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Finding the Fourth Proportional to 8,940.10, 13,419.96 and 7,103.02

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Solution

The fourth proportional to 8,940.10, 13,419.96 and 7,103.02 is: 10,662.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.10 : 13,419.96 = 7,103.02 : x
  2. Step 2: Convert to fraction form
    8,940.10/13,419.96 = 7,103.02/x
  3. Step 3: Cross multiply
    8,940.10x = 13,419.96 × 7,103.02
  4. Step 4: Simplify right side
    8,940.10x = 95,322,244.28
  5. Step 5: Solve for x
    x = 95,322,244.28/8,940.10
  6. Step 6: Final answer
    x = 10,662.32

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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.