Home / 10,639.28-14,682.84-6,161.60

Finding the Fourth Proportional to 10,639.28, 14,682.84 and 6,161.60

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Solution

The fourth proportional to 10,639.28, 14,682.84 and 6,161.60 is: 8,503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.28 : 14,682.84 = 6,161.60 : x
  2. Step 2: Convert to fraction form
    10,639.28/14,682.84 = 6,161.60/x
  3. Step 3: Cross multiply
    10,639.28x = 14,682.84 × 6,161.60
  4. Step 4: Simplify right side
    10,639.28x = 90,469,786.94
  5. Step 5: Solve for x
    x = 90,469,786.94/10,639.28
  6. Step 6: Final answer
    x = 8,503.37

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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.