Home / 13,975.38-19,286.28-7,687.62

Finding the Fourth Proportional to 13,975.38, 19,286.28 and 7,687.62

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Solution

The fourth proportional to 13,975.38, 19,286.28 and 7,687.62 is: 10,609.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.38 : 19,286.28 = 7,687.62 : x
  2. Step 2: Convert to fraction form
    13,975.38/19,286.28 = 7,687.62/x
  3. Step 3: Cross multiply
    13,975.38x = 19,286.28 × 7,687.62
  4. Step 4: Simplify right side
    13,975.38x = 148,265,591.85
  5. Step 5: Solve for x
    x = 148,265,591.85/13,975.38
  6. Step 6: Final answer
    x = 10,609.06

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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.