Home / 10,639.76-15,960.75-4,065.90

Finding the Fourth Proportional to 10,639.76, 15,960.75 and 4,065.90

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Solution

The fourth proportional to 10,639.76, 15,960.75 and 4,065.90 is: 6,099.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.76 : 15,960.75 = 4,065.90 : x
  2. Step 2: Convert to fraction form
    10,639.76/15,960.75 = 4,065.90/x
  3. Step 3: Cross multiply
    10,639.76x = 15,960.75 × 4,065.90
  4. Step 4: Simplify right side
    10,639.76x = 64,894,738.33
  5. Step 5: Solve for x
    x = 64,894,738.33/10,639.76
  6. Step 6: Final answer
    x = 6,099.27

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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.