Home / 11,420.20-17,143.10-8,834.60

Finding the Fourth Proportional to 11,420.20, 17,143.10 and 8,834.60

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Solution

The fourth proportional to 11,420.20, 17,143.10 and 8,834.60 is: 13,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.20 : 17,143.10 = 8,834.60 : x
  2. Step 2: Convert to fraction form
    11,420.20/17,143.10 = 8,834.60/x
  3. Step 3: Cross multiply
    11,420.20x = 17,143.10 × 8,834.60
  4. Step 4: Simplify right side
    11,420.20x = 151,452,431.26
  5. Step 5: Solve for x
    x = 151,452,431.26/11,420.20
  6. Step 6: Final answer
    x = 13,261.80

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1.5x scale

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.