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Finding the Fourth Proportional to 11,079.26, 15,291 and 6,605.63

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Solution

The fourth proportional to 11,079.26, 15,291 and 6,605.63 is: 9,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,079.26 : 15,291 = 6,605.63 : x
  2. Step 2: Convert to fraction form
    11,079.26/15,291 = 6,605.63/x
  3. Step 3: Cross multiply
    11,079.26x = 15,291 × 6,605.63
  4. Step 4: Simplify right side
    11,079.26x = 101,006,611.88
  5. Step 5: Solve for x
    x = 101,006,611.88/11,079.26
  6. Step 6: Final answer
    x = 9,116.73

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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.