Home / 10,639.67-15,960.56-4,071.38

Finding the Fourth Proportional to 10,639.67, 15,960.56 and 4,071.38

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Solution

The fourth proportional to 10,639.67, 15,960.56 and 4,071.38 is: 6,107.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.67 : 15,960.56 = 4,071.38 : x
  2. Step 2: Convert to fraction form
    10,639.67/15,960.56 = 4,071.38/x
  3. Step 3: Cross multiply
    10,639.67x = 15,960.56 × 4,071.38
  4. Step 4: Simplify right side
    10,639.67x = 64,981,404.61
  5. Step 5: Solve for x
    x = 64,981,404.61/10,639.67
  6. Step 6: Final answer
    x = 6,107.47

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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.