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Finding the Fourth Proportional to 17,609.80, 26,405.10 and 7,209.80

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Solution

The fourth proportional to 17,609.80, 26,405.10 and 7,209.80 is: 10,810.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,609.80 : 26,405.10 = 7,209.80 : x
  2. Step 2: Convert to fraction form
    17,609.80/26,405.10 = 7,209.80/x
  3. Step 3: Cross multiply
    17,609.80x = 26,405.10 × 7,209.80
  4. Step 4: Simplify right side
    17,609.80x = 190,375,489.98
  5. Step 5: Solve for x
    x = 190,375,489.98/17,609.80
  6. Step 6: Final answer
    x = 10,810.77

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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.