Home / 20,968.32-28,936.17-12,015.96

Finding the Fourth Proportional to 20,968.32, 28,936.17 and 12,015.96

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Solution

The fourth proportional to 20,968.32, 28,936.17 and 12,015.96 is: 16,581.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.32 : 28,936.17 = 12,015.96 : x
  2. Step 2: Convert to fraction form
    20,968.32/28,936.17 = 12,015.96/x
  3. Step 3: Cross multiply
    20,968.32x = 28,936.17 × 12,015.96
  4. Step 4: Simplify right side
    20,968.32x = 347,695,861.27
  5. Step 5: Solve for x
    x = 347,695,861.27/20,968.32
  6. Step 6: Final answer
    x = 16,581.96

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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.