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Finding the Fourth Proportional to 11,811.65, 17,717.51 and 11,089.94

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Solution

The fourth proportional to 11,811.65, 17,717.51 and 11,089.94 is: 16,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.65 : 17,717.51 = 11,089.94 : x
  2. Step 2: Convert to fraction form
    11,811.65/17,717.51 = 11,089.94/x
  3. Step 3: Cross multiply
    11,811.65x = 17,717.51 × 11,089.94
  4. Step 4: Simplify right side
    11,811.65x = 196,486,133.84
  5. Step 5: Solve for x
    x = 196,486,133.84/11,811.65
  6. Step 6: Final answer
    x = 16,634.94

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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.