Home / 10,211.65-15,318.42-3,972.14

Finding the Fourth Proportional to 10,211.65, 15,318.42 and 3,972.14

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Solution

The fourth proportional to 10,211.65, 15,318.42 and 3,972.14 is: 5,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.65 : 15,318.42 = 3,972.14 : x
  2. Step 2: Convert to fraction form
    10,211.65/15,318.42 = 3,972.14/x
  3. Step 3: Cross multiply
    10,211.65x = 15,318.42 × 3,972.14
  4. Step 4: Simplify right side
    10,211.65x = 60,846,904.57
  5. Step 5: Solve for x
    x = 60,846,904.57/10,211.65
  6. Step 6: Final answer
    x = 5,958.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.