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Finding the Fourth Proportional to 11,909.16, 17,850.94 and 5,326.28

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Solution

The fourth proportional to 11,909.16, 17,850.94 and 5,326.28 is: 7,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.16 : 17,850.94 = 5,326.28 : x
  2. Step 2: Convert to fraction form
    11,909.16/17,850.94 = 5,326.28/x
  3. Step 3: Cross multiply
    11,909.16x = 17,850.94 × 5,326.28
  4. Step 4: Simplify right side
    11,909.16x = 95,079,104.70
  5. Step 5: Solve for x
    x = 95,079,104.70/11,909.16
  6. Step 6: Final answer
    x = 7,983.70

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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.