Home / 20,725.72-28,601.60-11,773.30

Finding the Fourth Proportional to 20,725.72, 28,601.60 and 11,773.30

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Solution

The fourth proportional to 20,725.72, 28,601.60 and 11,773.30 is: 16,247.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.72 : 28,601.60 = 11,773.30 : x
  2. Step 2: Convert to fraction form
    20,725.72/28,601.60 = 11,773.30/x
  3. Step 3: Cross multiply
    20,725.72x = 28,601.60 × 11,773.30
  4. Step 4: Simplify right side
    20,725.72x = 336,735,217.28
  5. Step 5: Solve for x
    x = 336,735,217.28/20,725.72
  6. Step 6: Final answer
    x = 16,247.21

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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.