Home / 9,912.47-13,680.60-6,136.84

Finding the Fourth Proportional to 9,912.47, 13,680.60 and 6,136.84

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Solution

The fourth proportional to 9,912.47, 13,680.60 and 6,136.84 is: 8,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.47 : 13,680.60 = 6,136.84 : x
  2. Step 2: Convert to fraction form
    9,912.47/13,680.60 = 6,136.84/x
  3. Step 3: Cross multiply
    9,912.47x = 13,680.60 × 6,136.84
  4. Step 4: Simplify right side
    9,912.47x = 83,955,653.30
  5. Step 5: Solve for x
    x = 83,955,653.30/9,912.47
  6. Step 6: Final answer
    x = 8,469.70

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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.