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Finding the Fourth Proportional to 11,687.94, 17,448.64 and 11,277.86

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Solution

The fourth proportional to 11,687.94, 17,448.64 and 11,277.86 is: 16,836.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.94 : 17,448.64 = 11,277.86 : x
  2. Step 2: Convert to fraction form
    11,687.94/17,448.64 = 11,277.86/x
  3. Step 3: Cross multiply
    11,687.94x = 17,448.64 × 11,277.86
  4. Step 4: Simplify right side
    11,687.94x = 196,783,319.11
  5. Step 5: Solve for x
    x = 196,783,319.11/11,687.94
  6. Step 6: Final answer
    x = 16,836.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.