Home / 20,725.92-28,601.84-11,294.48

Finding the Fourth Proportional to 20,725.92, 28,601.84 and 11,294.48

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Solution

The fourth proportional to 20,725.92, 28,601.84 and 11,294.48 is: 15,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.92 : 28,601.84 = 11,294.48 : x
  2. Step 2: Convert to fraction form
    20,725.92/28,601.84 = 11,294.48/x
  3. Step 3: Cross multiply
    20,725.92x = 28,601.84 × 11,294.48
  4. Step 4: Simplify right side
    20,725.92x = 323,042,909.84
  5. Step 5: Solve for x
    x = 323,042,909.84/20,725.92
  6. Step 6: Final answer
    x = 15,586.42

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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.