Home / 20,917.28-28,854.96-16,942.88

Finding the Fourth Proportional to 20,917.28, 28,854.96 and 16,942.88

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Solution

The fourth proportional to 20,917.28, 28,854.96 and 16,942.88 is: 23,372.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.28 : 28,854.96 = 16,942.88 : x
  2. Step 2: Convert to fraction form
    20,917.28/28,854.96 = 16,942.88/x
  3. Step 3: Cross multiply
    20,917.28x = 28,854.96 × 16,942.88
  4. Step 4: Simplify right side
    20,917.28x = 488,886,124.68
  5. Step 5: Solve for x
    x = 488,886,124.68/20,917.28
  6. Step 6: Final answer
    x = 23,372.36

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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.