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Finding the Fourth Proportional to 11,859.72, 17,783.78 and 6,930.60

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Solution

The fourth proportional to 11,859.72, 17,783.78 and 6,930.60 is: 10,392.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.72 : 17,783.78 = 6,930.60 : x
  2. Step 2: Convert to fraction form
    11,859.72/17,783.78 = 6,930.60/x
  3. Step 3: Cross multiply
    11,859.72x = 17,783.78 × 6,930.60
  4. Step 4: Simplify right side
    11,859.72x = 123,252,265.67
  5. Step 5: Solve for x
    x = 123,252,265.67/11,859.72
  6. Step 6: Final answer
    x = 10,392.51

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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.