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Finding the Fourth Proportional to 11,540.85, 15,811.02 and 11,108.91

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Solution

The fourth proportional to 11,540.85, 15,811.02 and 11,108.91 is: 15,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,540.85 : 15,811.02 = 11,108.91 : x
  2. Step 2: Convert to fraction form
    11,540.85/15,811.02 = 11,108.91/x
  3. Step 3: Cross multiply
    11,540.85x = 15,811.02 × 11,108.91
  4. Step 4: Simplify right side
    11,540.85x = 175,643,198.19
  5. Step 5: Solve for x
    x = 175,643,198.19/11,540.85
  6. Step 6: Final answer
    x = 15,219.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.