Home / 20,725.05-28,599.68-11,772.53

Finding the Fourth Proportional to 20,725.05, 28,599.68 and 11,772.53

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Solution

The fourth proportional to 20,725.05, 28,599.68 and 11,772.53 is: 16,245.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.05 : 28,599.68 = 11,772.53 : x
  2. Step 2: Convert to fraction form
    20,725.05/28,599.68 = 11,772.53/x
  3. Step 3: Cross multiply
    20,725.05x = 28,599.68 × 11,772.53
  4. Step 4: Simplify right side
    20,725.05x = 336,690,590.79
  5. Step 5: Solve for x
    x = 336,690,590.79/20,725.05
  6. Step 6: Final answer
    x = 16,245.59

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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.