Home / 13,684.92-18,882.82-7,940.30

Finding the Fourth Proportional to 13,684.92, 18,882.82 and 7,940.30

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Solution

The fourth proportional to 13,684.92, 18,882.82 and 7,940.30 is: 10,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.92 : 18,882.82 = 7,940.30 : x
  2. Step 2: Convert to fraction form
    13,684.92/18,882.82 = 7,940.30/x
  3. Step 3: Cross multiply
    13,684.92x = 18,882.82 × 7,940.30
  4. Step 4: Simplify right side
    13,684.92x = 149,935,255.65
  5. Step 5: Solve for x
    x = 149,935,255.65/13,684.92
  6. Step 6: Final answer
    x = 10,956.24

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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.