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Finding the Fourth Proportional to 13,008.26, 17,959.13 and 8,539.82

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Solution

The fourth proportional to 13,008.26, 17,959.13 and 8,539.82 is: 11,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.26 : 17,959.13 = 8,539.82 : x
  2. Step 2: Convert to fraction form
    13,008.26/17,959.13 = 8,539.82/x
  3. Step 3: Cross multiply
    13,008.26x = 17,959.13 × 8,539.82
  4. Step 4: Simplify right side
    13,008.26x = 153,367,694.86
  5. Step 5: Solve for x
    x = 153,367,694.86/13,008.26
  6. Step 6: Final answer
    x = 11,790.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.