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Finding the Fourth Proportional to 17,271.40, 25,911.90 and 8,506.60

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Solution

The fourth proportional to 17,271.40, 25,911.90 and 8,506.60 is: 12,762.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,271.40 : 25,911.90 = 8,506.60 : x
  2. Step 2: Convert to fraction form
    17,271.40/25,911.90 = 8,506.60/x
  3. Step 3: Cross multiply
    17,271.40x = 25,911.90 × 8,506.60
  4. Step 4: Simplify right side
    17,271.40x = 220,422,168.54
  5. Step 5: Solve for x
    x = 220,422,168.54/17,271.40
  6. Step 6: Final answer
    x = 12,762.26

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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.