Home / 11,372.20-17,071.10-8,786.60

Finding the Fourth Proportional to 11,372.20, 17,071.10 and 8,786.60

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Solution

The fourth proportional to 11,372.20, 17,071.10 and 8,786.60 is: 13,189.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,372.20 : 17,071.10 = 8,786.60 : x
  2. Step 2: Convert to fraction form
    11,372.20/17,071.10 = 8,786.60/x
  3. Step 3: Cross multiply
    11,372.20x = 17,071.10 × 8,786.60
  4. Step 4: Simplify right side
    11,372.20x = 149,996,927.26
  5. Step 5: Solve for x
    x = 149,996,927.26/11,372.20
  6. Step 6: Final answer
    x = 13,189.79

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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.