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Finding the Fourth Proportional to 12,711.92, 19,044.12 and 11,339.24

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Solution

The fourth proportional to 12,711.92, 19,044.12 and 11,339.24 is: 16,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.92 : 19,044.12 = 11,339.24 : x
  2. Step 2: Convert to fraction form
    12,711.92/19,044.12 = 11,339.24/x
  3. Step 3: Cross multiply
    12,711.92x = 19,044.12 × 11,339.24
  4. Step 4: Simplify right side
    12,711.92x = 215,945,847.27
  5. Step 5: Solve for x
    x = 215,945,847.27/12,711.92
  6. Step 6: Final answer
    x = 16,987.67

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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.