Home / 9,912.92-13,681.34-6,136.72

Finding the Fourth Proportional to 9,912.92, 13,681.34 and 6,136.72

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Solution

The fourth proportional to 9,912.92, 13,681.34 and 6,136.72 is: 8,469.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.92 : 13,681.34 = 6,136.72 : x
  2. Step 2: Convert to fraction form
    9,912.92/13,681.34 = 6,136.72/x
  3. Step 3: Cross multiply
    9,912.92x = 13,681.34 × 6,136.72
  4. Step 4: Simplify right side
    9,912.92x = 83,958,552.80
  5. Step 5: Solve for x
    x = 83,958,552.80/9,912.92
  6. Step 6: Final answer
    x = 8,469.61

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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.