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Finding the Fourth Proportional to 11,809.80, 17,694.18 and 9,859.32

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Solution

The fourth proportional to 11,809.80, 17,694.18 and 9,859.32 is: 14,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,809.80 : 17,694.18 = 9,859.32 : x
  2. Step 2: Convert to fraction form
    11,809.80/17,694.18 = 9,859.32/x
  3. Step 3: Cross multiply
    11,809.80x = 17,694.18 × 9,859.32
  4. Step 4: Simplify right side
    11,809.80x = 174,452,582.76
  5. Step 5: Solve for x
    x = 174,452,582.76/11,809.80
  6. Step 6: Final answer
    x = 14,771.85

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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.