Home / 11,428.20-17,136.83-6,685.70

Finding the Fourth Proportional to 11,428.20, 17,136.83 and 6,685.70

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Solution

The fourth proportional to 11,428.20, 17,136.83 and 6,685.70 is: 10,025.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,428.20 : 17,136.83 = 6,685.70 : x
  2. Step 2: Convert to fraction form
    11,428.20/17,136.83 = 6,685.70/x
  3. Step 3: Cross multiply
    11,428.20x = 17,136.83 × 6,685.70
  4. Step 4: Simplify right side
    11,428.20x = 114,571,585.22
  5. Step 5: Solve for x
    x = 114,571,585.22/11,428.20
  6. Step 6: Final answer
    x = 10,025.34

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1.5x scale

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.