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Finding the Fourth Proportional to 11,402.90, 17,080.50 and 9,169.65

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Solution

The fourth proportional to 11,402.90, 17,080.50 and 9,169.65 is: 13,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,402.90 : 17,080.50 = 9,169.65 : x
  2. Step 2: Convert to fraction form
    11,402.90/17,080.50 = 9,169.65/x
  3. Step 3: Cross multiply
    11,402.90x = 17,080.50 × 9,169.65
  4. Step 4: Simplify right side
    11,402.90x = 156,622,206.83
  5. Step 5: Solve for x
    x = 156,622,206.83/11,402.90
  6. Step 6: Final answer
    x = 13,735.30

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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.