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Finding the Fourth Proportional to 10,755.09, 14,847.08 and 8,786.79

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Solution

The fourth proportional to 10,755.09, 14,847.08 and 8,786.79 is: 12,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,755.09 : 14,847.08 = 8,786.79 : x
  2. Step 2: Convert to fraction form
    10,755.09/14,847.08 = 8,786.79/x
  3. Step 3: Cross multiply
    10,755.09x = 14,847.08 × 8,786.79
  4. Step 4: Simplify right side
    10,755.09x = 130,458,130.14
  5. Step 5: Solve for x
    x = 130,458,130.14/10,755.09
  6. Step 6: Final answer
    x = 12,129.90

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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.