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Finding the Fourth Proportional to 17,479.26, 26,209.44 and 9,139.23

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Solution

The fourth proportional to 17,479.26, 26,209.44 and 9,139.23 is: 13,703.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,479.26 : 26,209.44 = 9,139.23 : x
  2. Step 2: Convert to fraction form
    17,479.26/26,209.44 = 9,139.23/x
  3. Step 3: Cross multiply
    17,479.26x = 26,209.44 × 9,139.23
  4. Step 4: Simplify right side
    17,479.26x = 239,534,100.33
  5. Step 5: Solve for x
    x = 239,534,100.33/17,479.26
  6. Step 6: Final answer
    x = 13,703.90

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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.