Home / 20,725.92-28,600.80-11,773.20

Finding the Fourth Proportional to 20,725.92, 28,600.80 and 11,773.20

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Solution

The fourth proportional to 20,725.92, 28,600.80 and 11,773.20 is: 16,246.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.92 : 28,600.80 = 11,773.20 : x
  2. Step 2: Convert to fraction form
    20,725.92/28,600.80 = 11,773.20/x
  3. Step 3: Cross multiply
    20,725.92x = 28,600.80 × 11,773.20
  4. Step 4: Simplify right side
    20,725.92x = 336,722,938.56
  5. Step 5: Solve for x
    x = 336,722,938.56/20,725.92
  6. Step 6: Final answer
    x = 16,246.47

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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.