Home / 13,725.14-18,940.58-7,757.96

Finding the Fourth Proportional to 13,725.14, 18,940.58 and 7,757.96

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Solution

The fourth proportional to 13,725.14, 18,940.58 and 7,757.96 is: 10,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.14 : 18,940.58 = 7,757.96 : x
  2. Step 2: Convert to fraction form
    13,725.14/18,940.58 = 7,757.96/x
  3. Step 3: Cross multiply
    13,725.14x = 18,940.58 × 7,757.96
  4. Step 4: Simplify right side
    13,725.14x = 146,940,128.52
  5. Step 5: Solve for x
    x = 146,940,128.52/13,725.14
  6. Step 6: Final answer
    x = 10,705.91

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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.