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Finding the Fourth Proportional to 14,756.92, 20,364.42 and 8,469.34

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Solution

The fourth proportional to 14,756.92, 20,364.42 and 8,469.34 is: 11,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,756.92 : 20,364.42 = 8,469.34 : x
  2. Step 2: Convert to fraction form
    14,756.92/20,364.42 = 8,469.34/x
  3. Step 3: Cross multiply
    14,756.92x = 20,364.42 × 8,469.34
  4. Step 4: Simplify right side
    14,756.92x = 172,473,196.88
  5. Step 5: Solve for x
    x = 172,473,196.88/14,756.92
  6. Step 6: Final answer
    x = 11,687.61

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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.