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Finding the Fourth Proportional to 11,874.51, 17,811.14 and 4,478.49

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Solution

The fourth proportional to 11,874.51, 17,811.14 and 4,478.49 is: 6,717.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,874.51 : 17,811.14 = 4,478.49 : x
  2. Step 2: Convert to fraction form
    11,874.51/17,811.14 = 4,478.49/x
  3. Step 3: Cross multiply
    11,874.51x = 17,811.14 × 4,478.49
  4. Step 4: Simplify right side
    11,874.51x = 79,766,989.99
  5. Step 5: Solve for x
    x = 79,766,989.99/11,874.51
  6. Step 6: Final answer
    x = 6,717.50

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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.